BIOLOGY 4/19/2015. Photosynthesis. Outline. Autotrophs. The Process That Feeds the Biosphere. Photosynthetic Organisms

Size: px
Start display at page:

Download "BIOLOGY 4/19/2015. Photosynthesis. Outline. Autotrophs. The Process That Feeds the Biosphere. Photosynthetic Organisms"

Transcription

1 10 hotosynthesis CAMBELL BIOLOGY TENTH EDITION Reece Urry Cain Wasserman Minorsky Jackson Outline 1. hotosynthesis overview 2. and pigments 3. -dependent rxn 4. -independent rxn () 5. C3, C4 and CAM Lecture resentation by Dr Burns NVC Biol 120 Copyright 2014 earson 2009 Education, earson Education, Inc. Inc. The rocess That Feeds the Biosphere Autotrophs hotosynthesis is the process that converts solar energy into chemical energy Directly or indirectly, photosynthesis nourishes almost the entire living world Autotrophs sustain themselves without eating anything derived from other organisms Autotrophs are the producers of the biosphere, producing organic molecules from and other inorganic molecules Almost all plants are photoautotrophs, using the energy of sunlight to make organic molecules 3 4 hotosynthetic Organisms Figure 10.2 hotosynthesis occurs in plants, algae, certain other protists, and some prokaryotes These organisms feed not only themselves but also most of the living world (a) lants (b) Multicellular alga (c) Unicellular protists 10 m (d) Cyanobacteria 40 m 5 (e) urple sulfur bacteria 1 m 6 1

2 Heterotrophs Heterotrophs obtain their organic material from other organisms Heterotrophs are the consumers of the biosphere Almost all heterotrophs, including humans, depend on photoautotrophs for food and O 2 BioFlix: hotosynthesis 7 8 hotosynthesis converts light energy to the chemical energy of food Chloroplasts are structurally similar to and likely evolved from photosynthetic bacteria The structural organization of these cells allows for the chemical reactions of photosynthesis Chloroplasts: The Sites of hotosynthesis in lants Leaves are the major locations of photosynthesis Their green color is from chlorophyll, the green pigment within chloroplasts Chloroplasts are found mainly in cells of the mesophyll layer, the interior tissue of the leaf Each mesophyll cell contains chloroplasts 9 10 Chloroplast Structure Figure 10.4a Leaf cross section Chloroplasts Vein enters and O 2 exits the leaf through microscopic pores called stomata The chlorophyll is in the membranes of thylakoids (connected sacs in the chloroplast); thylakoids may be stacked in columns called grana Chloroplasts also contain stroma, a dense interior fluid Mesophyll Chloroplast Stomata O 2 Mesophyll cell m 2

3 Figure 10.4b Chloroplast Stroma Thylakoid Granum Thylakoid space Outer membrane Intermembrane space Inner membrane 1 m 14 What is the stomata? Chlorophyll a is found in the: 1. The watery matrix of the chloroplast 2. ores that let in 3. A stack of thylakoids 33% 33% 33% 1. Thylakoid membrane 2. Thylakoid lumen 3. Stroma 33% 33% 33% The watery matrix of... ores that let CO2 in A stack of thylakoids Thylakoid membrane Thylakoid lumen Stroma Tracking Atoms Through hotosynthesis The Splitting of Water hotosynthesis is a complex series of reactions that can be summarized as the following overall equation: Chloroplasts split H 2 O into hydrogen and oxygen, incorporating the electrons of hydrogen into sugar molecules and releasing oxygen as a by-product H 2 O + energy C 6 H 12 O O H 2 O

4 Figure 10.5 hotosynthesis as a Redox rocess Reactants: roducts: 6 12 H 2 O C 6 H 12 O 6 6 H 2 O 6 O 2 hotosynthesis reverses the direction of electron flow compared to respiration hotosynthesis is a redox process in which H 2 O is oxidized and is reduced hotosynthesis is an endergonic process; the energy boost is provided by light Figure 10.UN01 hotosynthesis two stages becomes reduced Energy 6 6 H 2 O C 6 H 12 O 6 6 O 2 becomes oxidized 1. dependent stage: Happens in the thylakoids energy is converted to chemical energy 2. independent reactions ( ): Happens in the stroma Carbon is fixed from to glucose 21 The Two Stages of hotosynthesis: An Overview The Two Stages of hotosynthesis: An Overview hotosynthesis consists of the light reactions (the photo part) and cycle (the synthesis part) The light reactions (in the thylakoids) Split H 2 O Release O 2 Reduce NAD + to NADH Generate from AD by photophosphorylation The cycle (in the stroma) forms sugar from, using and NADH The cycle begins with carbon fixation, incorporating into organic molecules

5 Figure Figure H 2 O H 2 O AD + i AD + i Reactions Reactions NADH Chloroplast Chloroplast 25 O 2 26 Figure Figure H 2 O H 2 O Reactions AD + i Reactions AD + i NADH NADH Chloroplast Chloroplast O 2 27 O 2 [CH 2 O] (sugar) 28 The light reactions convert solar energy to the chemical energy of and NADH Figure 10.1 Chloroplasts are solar-powered chemical factories Their thylakoids transform light energy into the chemical energy of and NADH

6 The Nature of Sunlight is a form of electromagnetic energy, also called electromagnetic radiation Like other electromagnetic energy, light travels in rhythmic waves Wavelength is the distance between crests of waves Wavelength determines the type of electromagnetic energy roperties of The electromagnetic spectrum is the entire range of electromagnetic energy, or radiation Visible light consists of wavelengths (including those that drive photosynthesis) that produce colors we can see also behaves as though it consists of discrete particles, called photons The shorter wavelengths have higher energy than longer wavelengths Figure m 10 5 nm 10 3 nm 1 nm 10 3 nm 10 6 nm (10 9 nm) 10 3 m hotosynthetic igments: The Receptors Gamma rays X-rays UV Infrared Microwaves Radio waves igments are substances that absorb visible light Different pigments absorb different wavelengths Wavelengths that are not absorbed are reflected or transmitted Visible light Leaves appear green because chlorophyll reflects and green light nm Shorter wavelength Longer wavelength Higher energy Lower energy Figure 10.8 Chloroplast Reflected light Absorbed light Granum Animation: and igments Right-click slide / select lay 35 Transmitted light 36 6

7 Absorption of light by chloroplast pigments Rate of photosynthesis (measured by O 2 release) 4/19/2015 Spectrophotometers A spectrophotometer measures a pigment s ability to absorb various wavelengths Figure 10.9 TECHNIQUE White light Refracting prism Chlorophyll solution hotoelectric tube Galvanometer This machine sends light through pigments and measures the fraction of light transmitted at each wavelength Slit moves to pass light of selected wavelength. Green light High transmittance (low absorption): Chlorophyll absorbs very little green light. 37 Blue light Low transmittance (high absorption): Chlorophyll absorbs most blue light. 38 Absorption spectrum Figure RESULTS Chlorophyll a Chlorophyll b An absorption spectrum is a graph plotting a pigment s light absorption versus wavelength The absorption spectrum of chlorophyll a suggests that violet-blue and red light work best for photosynthesis (a) Absorption spectra (b) Action spectrum Carotenoids Wavelength of light (nm) Aerobic bacteria Filament of alga 39 (c) Engelmann s experiment hotosynthetic igments Chlorophyll a is the main photosynthetic pigment Figure CH 3 CH 3 in chlorophyll a CHO in chlorophyll b orphyrin ring Accessory pigments, such as chlorophyll b, broaden the spectrum used for photosynthesis Accessory pigments called carotenoids absorb excessive light that would damage chlorophyll Hydrocarbon tail (H atoms not shown)

8 Thylakoid membrane Thylakoid membrane Energy of electron Thylakoid membrane Thylakoid membrane 4/19/2015 Excitation of Chlorophyll by Figure When a pigment absorbs light, it goes from a ground state to an excited state, which is unstable Excited state When excited electrons fall back to the ground state, photons are given off, an afterglow called fluorescence Heat If illuminated, an isolated solution of chlorophyll will fluoresce, giving off light and heat hoton Chlorophyll molecule hoton (fluorescence) Ground state (a) Excitation of isolated chlorophyll molecule (b) Fluorescence A hotosystem: A Reaction-Center Complex Associated with -Harvesting Complexes Figure A photosystem consists of a reaction-center complex (a type of protein complex) surrounded by light-harvesting complexes hoton hotosystem harvestincenter Reaction- complexes complex STROMA electron Chlorophyll STROMA The light-harvesting complexes (pigment molecules bound to proteins) transfer the energy of photons to the reaction center Transfer of energy Special pair of igment chlorophyll a molecules molecules THYLAKOID SACE (INTERIOR OF THYLAKOID) rotein subunits THYLAKOID SACE (a) How a photosystem harvests light (b) Structure of photosystem II Figure 10.13a hoton harvesting complexes hotosystem Reactioncenter complex STROMA electron Figure 10.13b Chlorophyll STROMA Transfer of energy Special pair of chlorophyll a molecules (a) How a photosystem harvests light igment molecules THYLAKOID SACE (INTERIOR OF THYLAKOID) 47 rotein subunits (b) Structure of photosystem II THYLAKOID SACE 48 8

9 hotosystems A primary electron in the reaction center accepts excited electrons from the reaction center and is reduced as a result Solar-powered transfer of an electron from a chlorophyll a molecule to the primary electron is the first step of the light reactions There are two types of photosystems in the thylakoid membrane hotosystem II (S II) functions first (the numbers reflect order of discovery) and is best at absorbing a wavelength of 680 nm The reaction-center chlorophyll a of S II is called hotosystems Linear Electron Flow hotosystem I (S I) is best at absorbing a wavelength of 700 nm The reaction-center chlorophyll a of S I is called 700 During the light reactions, there are two possible routes for electron flow: cyclic and linear Linear electron flow, the primary pathway, involves both photosystems and produces and NADH using light energy Linear Electron Flow Figure A photon hits a pigment and its energy is passed among pigment molecules until it excites An excited electron from 680 is transferred to the primary electron (we now call it ) igment molecules hotosystem II (S II)

10 Linear Electron Flow Figure is a very strong oxidizing agent 3. H 2 O is split by enzymes, and the electrons are transferred from the hydrogen atoms to 680 +, thus reducing it to 680 H 2 H 2O + 1 / O O 2 is released as a by-product of this reaction igment molecules hotosystem II (S II) Linear Electron Flow Figure Each electron falls down an electron transport chain from the primary electron of S II to S I 5. Energy released by the fall drives the creation of a proton gradient across the thylakoid membrane 2 H e 2 H 2O + 1 / 2 O q 4 Cytochrome complex 5 c Diffusion of H + (protons) across the membrane drives synthesis via synthase hotosystem II (S II) igment molecules Linear Electron Flow Figure In S I (like S II), transferred light energy excites 700, which loses an electron to an electron 2 H + 1 / 2 O 2 3 H 2O 2 q 4 Cytochrome complex c (700 that is missing an electron) accepts an electron passed down from S II via the electron transport chain hotosystem II (S II) igment molecules hotosystem I (S I)

11 Linear Electron Flow Figure Each electron falls down an electron transport chain from the primary electron of S I to the protein ferredoxin (Fd) 8. The electrons are then transferred to NAD + and reduce it to NADH 2 H + 1 / 2 O 2 2 H e 2O q 4 Cytochrome complex 5 c Fd 8 reductase + H NADH The electrons of NADH are available for the reactions of the cycle 1 6 This process also removes an H + from the stroma hotosystem II (S II) igment molecules hotosystem I (S I) Figure A Comparison of Chemiosmosis in Chloroplasts and Mitochondria hotosystem II Mill makes hotosystem I NADH 63 Chloroplasts and mitochondria generate by chemiosmosis, but use different sources of energy Mitochondria transfer chemical energy from food to ; chloroplasts transform light energy into the chemical energy of Spatial organization of chemiosmosis differs between chloroplasts and mitochondria but also shows similarities 64 A Comparison of Chemiosmosis in Chloroplasts and Mitochondria Figure Mitochondrion Chloroplast In mitochondria, protons are pumped to the intermembrane space and drive synthesis as they diffuse back into the mitochondrial lumen In chloroplasts, protons are pumped into the thylakoid space and drive synthesis as they diffuse back into the stroma MITOCHONDRION STRUCTURE Intermembrane space Inner membrane Matrix Electron transport chain H synthase Diffusion CHLOROLAST STRUCTURE Thylakoid space Thylakoid membrane Stroma 65 Key Higher [H ] Lower [H ] AD i H 66 11

12 Figure and NADH are produced on the side facing the stroma, where the cycle takes place In summary, light reactions generate and increase the potential energy of electrons by moving them from H 2 O to NADH STROMA (low H concentration) H 2O 1 1 / 2 O 2 THYLAKOID SACE +2 H + (high H concentration) STROMA (low H concentration) hotosystem II 4 H + Thylakoid membrane Cytochrome complex hotosystem I q 2 4 H + c synthase AD + i H + reductase 3 + H Fd NADH To Figure 10.UN08 Cyclic Electron Flow Cyclic electron flow uses only photosystem I and produces, but not NADH No oxygen is released Cyclic electron flow generates surplus, satisfying the higher demand in the cycle Occurs when there is a build up of NADH Figure Cyclic Electron Flow q Fd Cytochrome complex Fd reductase + H NADH Some organisms such as purple sulfur bacteria have S I but not S II Cyclic electron flow is thought to have evolved before linear electron flow hotosystem II c hotosystem I Cyclic electron flow may protect cells from light-induced damage

13 The wavelength of light that the chlorophyll a pigment found at the reaction center in photosystem I absorbs is: The electron donor for photosystem II is: nm nm nm nm 25% 25% 25% 25% 1. NADH 2. Water 3. NADH 4. Oxygen 25% 25% 25% 25% 660 nm 700 nm 680 nm 800 nm NADH Water NADH Oxygen The final electron from photosystem I is: The cycle uses the chemical energy of and NADH to reduce to sugar 1. NAD+ 2. Water 3. NAD+ 4. Oxygen 25% 25% 25% 25% The cycle, like the citric acid cycle, regenerates its starting material after molecules enter and leave the cycle The cycle builds sugar from smaller molecules by using and the reducing power of electrons carried by NADH NAD+ Water NAD+ Oxygen 76 Takes place in the stroma of the chloroplasts Needs: 18, 12 NADH, 6 Carbon dioxide ( ) to make 1 glucose 6 molecules of 6 molecules of ribulose bisphosphate (RuB) 1 uptake 6 AD phase 6 molecules of ribulose CALVIN phosphate (R) CYCLE 3 2 RuB Carbon regeneration reduction phase phase 10 molecules of G3 Glucose and other carbohydrate synthesis 12 molecules of glyceraldehyde-3- phosphate (G3) Through a series of 2 molecules reactions G3 is of glyceraldehyde-3- rearranged into new phosphate (G3) RuB molecules or another sugar molecules are captured by RuB, resulting in an unstable intermediate that is immediately broken apart into 2 GA 12 molecules of phosphoglycerate (GA) AD 12 NADH 12 NAD + GA is phosphorylated by and reduced by NADH. Removal of a phosphate results in formation of G3. 13

14 The The Carbon enters the cycle as and leaves as a sugar named glyceraldehyde 3-phospate (G3) For net synthesis of 1 G3, the cycle must take place three times, fixing 3 molecules of For the synthesis of 1 glucose, the cycle must take place six times, Fixing 6 molecules of The cycle has three phases Carbon fixation (catalyzed by rubisco) Reduction Regeneration of the (RuB) Figure Input Figure Input 3 (Entering one at a time) 3 (Entering one at a time) hase 1: Carbon fixation hase 1: Carbon fixation Rubisco Rubisco 3 Short-lived intermediate 3 Short-lived intermediate 3 Ribulose bisphosphate (RuB) 6 3-hosphoglycerate 3 Ribulose bisphosphate (RuB) 6 3-hosphoglycerate 6 6 AD 6 1,3-Bisphosphoglycerate 6 NADH 6 6 i 6 Glyceraldehyde 3-phosphate (G3) hase 2: Reduction 81 1 G3 (a sugar) Output Glucose and other organic compounds 82 Figure Input 3 (Entering one at a time) 1 st step: Carbon uptake = carbon fixation 3 Ribulose bisphosphate (RuB) 3 AD 3 hase 3: Regeneration of the (RuB) 5 G3 hase 1: Carbon fixation Rubisco 3 Short-lived intermediate 6 3-hosphoglycerate 6 6 AD 6 1,3-Bisphosphoglycerate 6 NADH 6 6 i 6 Glyceraldehyde 3-phosphate hase 2: (G3) Reduction and a phosphorylated five carbon molecule, ribulose bisphosphate (RuB) combines with the help of an enzyme, rubisco, to form a six carbon molecule that spontaneously splits into two 3 carbon molecules, phosphoglycerate (GA) rubisco + RuB 2 GA 1 G3 (a sugar) Output Glucose and other organic compounds 83 14

15 2 cd Step: Carbon Reduction hosphoglycerate (GA) is converted to glyceraldehyde-3-phosphate (G3). is used to phosphorylate GA and NADH is used to reduce GA 3 molecules, 9 and 6 NADH are needed for the cycle to produce 1 glyceraldehyde-3-phosphate (G3) This needs to happen 2 times to make a glucose molecule So 6 molecules, 18 and 12 NADH are needed for the cycle to produce 1 glucose During the light dependent reactions Carbon is fixed 2. H2O is split to produce oxygen 3. NADH and are produced 4. 2 and 3 25% 25% 25% 25% ZdF2TY OD1dQ&feature=related Carbon is fixed H2O is split to produ.. NADH and are... 2 and 3 15

16 lants have mitochondria lants carry out cellular respiration 1. True 2. False 50% 50% 1. True 2. False 50% 50% True False True False Alternative mechanisms of carbon fixation have evolved in hot, arid climates Dehydration is a problem for plants, sometimes requiring trade-offs with other metabolic processes, especially photosynthesis On hot, dry days, plants close stomata, which conserves H 2 O but also limits photosynthesis The closing of stomata reduces access to and causes O 2 to build up These conditions favor an apparently wasteful process called photorespiration hotorespiration: An Evolutionary Relic? In most plants, C 3 plants, initial fixation of, via rubisco, forms a three-carbon compound (3- phosphoglycerate) In photorespiration, rubisco adds O 2 instead of in the cycle, producing a two-carbon compound hotorespiration consumes O 2 and organic fuel and releases without producing or sugar hotorespiration C 4 lants hotorespiration may be an evolutionary relic because rubisco first evolved at a time when the atmosphere had far less O 2 and more hotorespiration limits damaging products of light reactions that build up in the absence of the cycle In many plants, photorespiration is a problem because on a hot, dry day it can drain as much as 50% of the carbon fixed by the cycle C 4 plants minimize the cost of photorespiration by incorporating into four-carbon compounds in mesophyll cells This step requires the enzyme E carboxylase E carboxylase has a higher affinity for than rubisco does; it can fix even when concentrations are low These four-carbon compounds are exported to bundle-sheath cells, where they release that is then used in the cycle

17 Figure Figure 10.20a hotosynthetic cells of C 4 plant leaf Mesophyll cell Bundlesheath cell Vein (vascular tissue) C 4 leaf anatomy Stoma The C 4 pathway Mesophyll cell E carboxylase Oxaloacetate (4C) E (3C) AD Bundlesheath cell Malate (4C) yruvate (3C) hotosynthetic cells of C 4 plant leaf Mesophyll cell Bundlesheath cell Vein (vascular tissue) C 4 leaf anatomy Sugar Vascular tissue Stoma Figure 10.20b The C 4 pathway Mesophyll cell E carboxylase Oxaloacetate (4C) Bundlesheath cell Malate (4C) E (3C) AD yruvate (3C) Sugar CAM lants Some plants, including succulents, use crassulacean acid metabolism (CAM) to fix carbon CAM plants open their stomata at night, incorporating into organic acids Stomata close during the day, and is released from organic acids and used in the cycle Vascular tissue Figure The Importance of hotosynthesis: A Review The energy entering chloroplasts as sunlight gets stored as chemical energy in organic compounds Sugarcane Mesophyll cell Bundlesheath cell C 4 Organic acid CO2 1 ineapple incorporated (carbon fixation) 2 released to the cycle CAM Organic acid Night Day Sugar made in the chloroplasts supplies chemical energy and carbon skeletons to synthesize the organic molecules of cells lants store excess sugar as starch in structures such as roots, tubers, seeds, and fruits In addition to food production, photosynthesis produces the O 2 in our atmosphere Sugar (a) Spatial separation of steps Sugar 101 (b) Temporal separation of steps

18 Figure Figure 10.UN02 H 2 O Reactions: hotosystem II Electron transport chain hotosystem I Electron transport chain Chloroplast AD + i RuB NADH 3-hosphoglycerate G3 Starch (storage) O 2 H 2 O hotosystem II q Cytochrome complex c hotosystem I Fd reductase + H NADH O 2 Sucrose (export) Figure 10.UN03 3 Important Concepts Carbon fixation Know the vocabulary in this lecture Regeneration of 3 5C 6 3C 5 3C Reduction Know the overall reaction of photosynthesis, what is being reduced and oxidized Understand the light spectrum, what wavelengths and colors are absorbed by chlorohyll, know the pigments involved in photosynthesis, the general structure of chlorophyll, know which wavelengths have higher energy (longer or shorter) 1 G3 (3C) 105 Important Concepts Know the leaf structure and the functions of the components including the Stomata, veins, Chloroplasts, mesophyll layer Know the chloroplast structure Where do the two stages of photosynthesis (light dependent and light independent) take place Know what happens during the light dependent stage, including what is needed, what is produced, what molecules are donating and accepting electrons, who do they give them to or get them from? Important Concepts Understand the role of the reaction centers, photosystem I, photosystem II, the electron transport chains in the light dependent reaction, know the differences between photosystem I and II Understand how is produced during the light dependent stage, and how NADH is produced. Know the difference between production in the mitochondria and in the chloroplast Understand the cyclic electron flow, when does this happen and what are the benefits? 18

19 Important Concepts Important Concepts Know what happens during the light independent () stage, know what is needed and what is produced, including: 2 glyceraldehyde-3- phosphate (G3) which are made into one glucose. Know the three stages of the cycle and what goes into and out of each stage and what is the purpose of the stage Know that you need 18, 12 NADH, and 6CO2 to make one glucose molecule in the calvin cycle Know the role of the enzymes rubisco and E carboxylase Know what C3 plants are and how they fix carbon and know the C4 and CAM adaptations. What photorespiration? 19

10/2/2011. Outline. The Process That Feeds the Biosphere. Autotrophs. Photosynthetic Organisms

10/2/2011. Outline. The Process That Feeds the Biosphere. Autotrophs. Photosynthetic Organisms Chapter 10 hotosynthesis Outline 1. hotosynthesis overview. 3. igments 4. -dependent rxn 5. -independent rxn () 6. C3, C4 and CAM The rocess That Feeds the Biosphere hotosynthesis is the process that converts

More information

Chapter 10 Photosynthesis

Chapter 10 Photosynthesis Chapter 10 Photosynthesis Overview: The Process That Feeds the Biosphere Photosynthesis is the process that converts solar energy into chemical energy Photosynthesis occurs in plants, algae, certain other

More information

Chapter 10. Photosynthesis

Chapter 10. Photosynthesis Chapter 10 Photosynthesis Overview: The Process That Feeds the Biosphere Photosynthesis is the process that converts solar energy into chemical energy Directly or indirectly, photosynthesis nourishes almost

More information

CH 8: Photosynthesis Overview Photosynthesis is the process that converts solar energy into chemical energy

CH 8: Photosynthesis Overview Photosynthesis is the process that converts solar energy into chemical energy CH 8: Photosynthesis Overview Photosynthesis is the process that converts solar energy into chemical energy Directly or indirectly, photosynthesis nourishes almost the entire living world Autotrophs sustain

More information

Photosynthesis. Chapter 10. Biology Eighth Edition Neil Campbell and Jane Reece. PowerPoint Lecture Presentations for

Photosynthesis. Chapter 10. Biology Eighth Edition Neil Campbell and Jane Reece. PowerPoint Lecture Presentations for Chapter 10 Photosynthesis PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with contributions from Joan Sharp Overview:

More information

Photosynthesis. Chapter 10. Biology Eighth Edition Neil Campbell and Jane Reece. PowerPoint Lecture Presentations for

Photosynthesis. Chapter 10. Biology Eighth Edition Neil Campbell and Jane Reece. PowerPoint Lecture Presentations for Chapter 10 Photosynthesis PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with contributions from Joan Sharp Copyright

More information

Photosynthesis. Chapter 10. PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece

Photosynthesis. Chapter 10. PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Chapter 10 Photosynthesis PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with contributions from Joan Sharp Overview:

More information

8 Photosynthesis CAMPBELL BIOLOGY IN FOCUS. Urry Cain Wasserman Minorsky Jackson Reece

8 Photosynthesis CAMPBELL BIOLOGY IN FOCUS. Urry Cain Wasserman Minorsky Jackson Reece CAMPBELL BIOLOGY IN FOCUS Urry Cain Wasserman Minorsky Jackson Reece 8 Photosynthesis Lecture Presentations by Kathleen Fitzpatrick and Nicole Tunbridge Overview: The Process That Feeds the Biosphere Photosynthesis

More information

Photosynthesis. Chapter 10. Biology Eighth Edition Neil Campbell and Jane Reece. PowerPoint Lecture Presentations for

Photosynthesis. Chapter 10. Biology Eighth Edition Neil Campbell and Jane Reece. PowerPoint Lecture Presentations for Chapter 10 Photosynthesis PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with contributions from Joan Sharp Overview:

More information

Photosynthesis. Biology Eighth Edition Neil Campbell and Jane Reece. PowerPoint Lecture Presentations for

Photosynthesis. Biology Eighth Edition Neil Campbell and Jane Reece. PowerPoint Lecture Presentations for Chapter 10 Photosynthesis PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with contributions from Joan Sharp Overview:

More information

BIOLOGY. Photosynthesis CAMPBELL. Reece Urry Cain Wasserman Minorsky Jackson. Lecture Presentation by Nicole Tunbridge and Kathleen Fitzpatrick

BIOLOGY. Photosynthesis CAMPBELL. Reece Urry Cain Wasserman Minorsky Jackson. Lecture Presentation by Nicole Tunbridge and Kathleen Fitzpatrick CAMPBELL BIOLOGY TENTH EDITION Reece Urry Cain Wasserman Minorsky Jackson 10 Photosynthesis Lecture Presentation by Nicole Tunbridge and Kathleen Fitzpatrick The Process That Feeds the Biosphere Photosynthesis

More information

LECTURE PRESENTATIONS

LECTURE PRESENTATIONS LECTURE PRESENTATIONS For CAMPBELL BIOLOGY, NINTH EDITION Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson Chapter 10 Photosynthesis Lectures by Erin

More information

Chapter 7. Introduction. Introduction. Photosynthesis: Using Light to Make Food. Plants, algae, and certain prokaryotes

Chapter 7. Introduction. Introduction. Photosynthesis: Using Light to Make Food. Plants, algae, and certain prokaryotes Chapter 7 hotosynthesis: Using to Make Food oweroint Lectures for Campbell Biology: Concepts & Connections, Seventh Edition Reece, Taylor, Simon, and Dickey Lecture by Edward J. Zalisko Introduction lants,

More information

Photosynthesis (Outline)

Photosynthesis (Outline) Photosynthesis (Outline) 1. Overview of photosynthesis 2. Producers, consumers, and decomposers of the ecosystem (source of carbon and energy) 3. Plant structures: organ, tissue, cells, sub-cellular organelle,

More information

BIOLOGY. Photosynthesis CAMPBELL. Concept 10.1: Photosynthesis converts light energy to the chemical energy of food. Anabolic pathways endergonic

BIOLOGY. Photosynthesis CAMPBELL. Concept 10.1: Photosynthesis converts light energy to the chemical energy of food. Anabolic pathways endergonic 10 Photosynthesis CAMPBELL BIOLOGY TENTH EDITION Reece Urry Cain Wasserman Minorsky Jackson Lecture Presentation by Nicole Tunbridge and Kathleen Fitzpatrick energy ECOSYSTEM CO 2 H 2 O Organic O 2 powers

More information

Photosynthesis CAMPBELL BIOLOGY IN FOCUS SECOND EDITION URRY CAIN WASSERMAN MINORSKY REECE

Photosynthesis CAMPBELL BIOLOGY IN FOCUS SECOND EDITION URRY CAIN WASSERMAN MINORSKY REECE CAMPBELL BIOLOGY IN FOCUS URRY CAIN WASSERMAN MINORSKY REECE 8 Photosynthesis Lecture Presentations by Kathleen Fitzpatrick and Nicole Tunbridge, Simon Fraser University SECOND EDITION The Process That

More information

Photosynthesis CAMPBELL BIOLOGY IN FOCUS SECOND EDITION URRY CAIN WASSERMAN MINORSKY REECE

Photosynthesis CAMPBELL BIOLOGY IN FOCUS SECOND EDITION URRY CAIN WASSERMAN MINORSKY REECE CAMPBELL BIOLOGY IN FOCUS URRY CAIN WASSERMAN MINORSKY REECE 8 Photosynthesis Lecture Presentations by Kathleen Fitzpatrick and Nicole Tunbridge, Simon Fraser University SECOND EDITION The Process That

More information

LECTURE PRESENTATIONS

LECTURE PRESENTATIONS LECTURE PRESENTATIONS For CAMPBELL BIOLOGY, NINTH EDITION Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson Chapter 10 Photosynthesis Lectures by Erin

More information

BIOLOGY. Photosynthesis. The Process That Feeds the Biosphere. Autotrophs sustain themselves without eating anything derived from other organisms

BIOLOGY. Photosynthesis. The Process That Feeds the Biosphere. Autotrophs sustain themselves without eating anything derived from other organisms 0 Photosynthesis CAMPBELL BIOLOGY TENTH EDITION Reece Urry Cain Wasserman Minorsky Jackson energy ECOSYSTEM CO H O Photosynthesis in chloroplasts Cellular respiration in mitochondria Organic O powers most

More information

Chapter 10: PHOTOSYNTHESIS

Chapter 10: PHOTOSYNTHESIS Chapter 10: PHOTOSYNTHESIS 1. Overview of Photosynthesis 2. Light Absorption 3. The Light Reactions 4. The Calvin Cycle 1. Overview of Photosynthesis Chapter Reading pp. 185-190, 206-207 What is Photosynthesis?

More information

Photosynthesis. Chapter 10. PowerPoint Lectures for Biology, Seventh Edition. Lectures by Chris Romero. Neil Campbell and Jane Reece

Photosynthesis. Chapter 10. PowerPoint Lectures for Biology, Seventh Edition. Lectures by Chris Romero. Neil Campbell and Jane Reece Chapter 10 Photosynthesis PowerPoint Lectures for Biology, Seventh Edition Neil Campbell and Jane Reece Lectures by Chris Romero PREVIEW The Process That Feeds the Biosphere Photosynthesis Is the process

More information

photosynthesis autotrophic organisms photoautotrophs photoautotrophs chapter 14

photosynthesis autotrophic organisms photoautotrophs photoautotrophs chapter 14 autotrophic organisms heterotroph autotrophs produce organic nutrients from and HS. Chemoautotrophs use energy from inorganic molecules. hotoautotrophs use radiant energy to make organic compounds photosynthesis

More information

Photosynthesis (Outline)

Photosynthesis (Outline) Photosynthesis (Outline) 1. Overview of photosynthesis 2. Producers, consumers, and decomposers of the ecosystem (source of carbon and energy) (Autotrophs: photo-autotrophs, chemo-autotrophs, electro-autotrophs,

More information

Photosynthesis. Chapter 10. Biology. Edited by Shawn Lester. Eighth Edition Neil Campbell and Jane Reece. PowerPoint Lecture Presentations for

Photosynthesis. Chapter 10. Biology. Edited by Shawn Lester. Eighth Edition Neil Campbell and Jane Reece. PowerPoint Lecture Presentations for Chapter 10 Photosynthesis Edited by Shawn Lester PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with contributions

More information

Chapter 8 PHOTOSYNTHESIS Chapter # Chapter Title PowerPoint Image Slideshow

Chapter 8 PHOTOSYNTHESIS Chapter # Chapter Title PowerPoint Image Slideshow COLLEGE BIOLOGY PHYSICS Chapter 8 PHOTOSYNTHESIS Chapter # Chapter Title PowerPoint Image Slideshow Figure 8.0 Photosynthesis Figure 8.1 Earth s distribution of photosynthesis as seen via chlorophyll a

More information

BIOLOGY. Photosynthetic Processes CAMPBELL. Reece Urry Cain Wasserman Minorsky Jackson

BIOLOGY. Photosynthetic Processes CAMPBELL. Reece Urry Cain Wasserman Minorsky Jackson CAMPBELL BIOLOGY TENTH EDITION Reece Urry Cain Wasserman Minorsky Jackson 11 Photosynthetic Processes Lecture Presentation by Nicole Tunbridge and Kathleen Fitzpatrick The Process That Feeds the Biosphere

More information

BIOLOGY. Photosynthesis CAMPBELL. Reece Urry Cain Wasserman Minorsky Jackson. Lecture Presentation by Nicole Tunbridge and Kathleen Fitzpatrick

BIOLOGY. Photosynthesis CAMPBELL. Reece Urry Cain Wasserman Minorsky Jackson. Lecture Presentation by Nicole Tunbridge and Kathleen Fitzpatrick CAMPBELL BIOLOGY TENTH EDITION Reece Urry Cain Wasserman Minorsky Jackson 10 Photosynthesis Lecture Presentation by Nicole Tunbridge and Kathleen Fitzpatrick The Process That Feeds the Biosphere Photosynthesis

More information

BIOLOGY. Photosynthesis CAMPBELL. Reece Urry Cain Wasserman Minorsky Jackson. Lecture Presentation by Nicole Tunbridge and Kathleen Fitzpatrick

BIOLOGY. Photosynthesis CAMPBELL. Reece Urry Cain Wasserman Minorsky Jackson. Lecture Presentation by Nicole Tunbridge and Kathleen Fitzpatrick CAMPBELL BIOLOGY TENTH EDITION Reece Urry Cain Wasserman Minorsky Jackson 10 Photosynthesis Lecture Presentation by Nicole Tunbridge and Kathleen Fitzpatrick The Process That Feeds the Biosphere Photosynthesis

More information

Life on Earth is solar powered. Photosynthesis => conversion of light energy to chemical energy (stored in sugars and other organic molecules).

Life on Earth is solar powered. Photosynthesis => conversion of light energy to chemical energy (stored in sugars and other organic molecules). Photosynthesis Life on Earth is solar powered. Photosynthesis => conversion of light energy to chemical energy (stored in sugars and other organic molecules). Organisms obtain organic compounds by one

More information

Where does most of our society s energy come from (think of fossil fuels), how does that energy become fixed for human use?

Where does most of our society s energy come from (think of fossil fuels), how does that energy become fixed for human use? Where does most of our society s energy come from (think of fossil fuels), how does that energy become fixed for human use? The Photosynthesis equation 6 CO 2 + 12 H 2 O + Light energy C 6 H 12 O 6 +

More information

LECTURE PRESENTATIONS

LECTURE PRESENTATIONS LECTURE PRESENTATIONS For CAMPBELL BIOLOGY, NINTH EDITION Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson Chapter 10 Photosynthesis Lectures by Erin

More information

Chapter 7 AN OVERVIEW OF PHOTOSYNTHESIS. Introduction. Introduction. Photosynthesis: Using Light to Make Food. Plants, algae, and certain prokaryotes

Chapter 7 AN OVERVIEW OF PHOTOSYNTHESIS. Introduction. Introduction. Photosynthesis: Using Light to Make Food. Plants, algae, and certain prokaryotes Chapter 7 hotosynthesis: Using to Make Food Introduction lants, algae, and certain prokaryotes convert light energy to chemical energy and store the chemical energy in sugar, made from carbon dioxide and

More information

AN OVERVIEW OF PHOTOSYNTHESIS

AN OVERVIEW OF PHOTOSYNTHESIS Figure 7.0_ Chapter 7: Big Ideas An Overview of hotosynthesis The Reactions: Converting Solar Energy to Chemical Energy AN OVERVIEW OF HOTOSYNTHESIS The : Reducing CO to Sugar hotosynthesis Reviewed and

More information

8 Photosynthesis CAMPBELL BIOLOGY IN FOCUS. Urry Cain Wasserman Minorsky Jackson Reece

8 Photosynthesis CAMPBELL BIOLOGY IN FOCUS. Urry Cain Wasserman Minorsky Jackson Reece CAMPBELL BIOLOGY IN FOCUS Urry Cain Wasserman Minorsky Jackson Reece 8 Photosynthesis Lecture Presentations by Kathleen Fitzpatrick and Nicole Tunbridge Objective: You will be able to contrast respiration

More information

AP Biology. Chloroplasts: sites of photosynthesis in plants

AP Biology. Chloroplasts: sites of photosynthesis in plants The summary equation of photosynthesis including the source and fate of the reactants and products. How leaf and chloroplast anatomy relates to photosynthesis. How photosystems convert solar energy to

More information

AP Biology Day 21. Friday, October 7, 2016

AP Biology Day 21. Friday, October 7, 2016 AP Biology Day 21 Friday, October 7, 2016 Do-Now Group Discussion In your groups, discuss the 2014 FRQ prompt Discuss possible answers for each part Jot down your ideas as a group to help plan a response

More information

The summary equation of photosynthesis including the source and fate of the reactants and products. How leaf and chloroplast anatomy relates to

The summary equation of photosynthesis including the source and fate of the reactants and products. How leaf and chloroplast anatomy relates to 1 The summary equation of photosynthesis including the source and fate of the reactants and products. How leaf and chloroplast anatomy relates to photosynthesis. How photosystems convert solar energy to

More information

Photosynthesis. 3. We have 2 types of organisms depending on their nutrition:

Photosynthesis. 3. We have 2 types of organisms depending on their nutrition: 1 لجان الد فعات/تلخيص علوم حياتية 101 Key concepts 10.1 PHOTOSYNTHESIS CONVERTS LIGHT ENERGY TO THE CHEMICAL ENERGY OF FOOD. 10.2 THE LIGHT REACTIONS CONVERT SOLAR ENERGY TO THE CHEMICAL ENERGY OF ATP

More information

Sunday, August 25, 2013 PHOTOSYNTHESIS

Sunday, August 25, 2013 PHOTOSYNTHESIS PHOTOSYNTHESIS PREFACE The sun is the ultimate source of energy. The sun powers nearly all life forms. Photosynthesis converts solar energy into chemical energy. Photoautotrophs use solar energy to synthesize

More information

Energy Conversions. Photosynthesis. Plants. Chloroplasts. Plant Pigments 10/13/2014. Chapter 10 Pg

Energy Conversions. Photosynthesis. Plants. Chloroplasts. Plant Pigments 10/13/2014. Chapter 10 Pg Energy Conversions Photosynthesis Chapter 10 Pg. 184 205 Life on Earth is solar-powered by autotrophs Autotrophs make their own food and have no need to consume other organisms. They are the ultimate source

More information

A. Structures of PS. Site of PS in plants: mostly in leaves in chloroplasts. Leaf cross section. Vein. Mesophyll CO 2 O 2. Stomata

A. Structures of PS. Site of PS in plants: mostly in leaves in chloroplasts. Leaf cross section. Vein. Mesophyll CO 2 O 2. Stomata PS Lecture Outline I. Introduction A. Structures B. Net Reaction II. Overview of PS A. Rxns in the chloroplast B. pigments III. Closer looks A. LD Rxns B. LI Rxns 1. non-cyclic e- flow 2. cyclic e- flow

More information

Photosynthesis Lecture 7 Fall Photosynthesis. Photosynthesis. The Chloroplast. Photosynthetic prokaryotes. The Chloroplast

Photosynthesis Lecture 7 Fall Photosynthesis. Photosynthesis. The Chloroplast. Photosynthetic prokaryotes. The Chloroplast Photosynthesis Lecture 7 Fall 2008 Photosynthesis Photosynthesis The process by which light energy from the sun is converted into chemical energy 1 Photosynthesis Inputs CO 2 Gas exchange occurs through

More information

Lecture 9: Photosynthesis

Lecture 9: Photosynthesis Lecture 9: Photosynthesis I. Characteristics of Light A. Light is composed of particles that travel as waves 1. Comprises a small part of the electromagnetic spectrum B. Radiation varies in wavelength

More information

The light reactions convert solar energy to the chemical energy of ATP and NADPH

The light reactions convert solar energy to the chemical energy of ATP and NADPH 10.2 - The light reactions convert solar energy to the chemical energy of ATP and NADPH Chloroplasts are solar-powered chemical factories The conversion of light energy into chemical energy occurs in the

More information

Photosynthesis: Using Light to Make Food

Photosynthesis: Using Light to Make Food Chapter 7 hotosynthesis: Using to Make Food Biology and Society: Biofuels Wood has historically been the main fuel used to produce heat and light. oweroint Lectures for Campbell Essential Biology, Fifth

More information

Photosynthesis. *Calvin cycle. (c) Unicellular protist. (e) Pruple sulfur bacteria. (d) Cyanobacteria. (b) Multicellular algae

Photosynthesis. *Calvin cycle. (c) Unicellular protist. (e) Pruple sulfur bacteria. (d) Cyanobacteria. (b) Multicellular algae Photosynthesis These organisms use light energy to drive the synthesis of organic molecules from carbon dioxide and (in most cases) water. They feed not only themselves, but the entire living world. (a)

More information

Photosynthesis is the main route by which that energy enters the biosphere of the Earth.

Photosynthesis is the main route by which that energy enters the biosphere of the Earth. Chapter 5-Photosynthesis Photosynthesis is the main route by which that energy enters the biosphere of the Earth. To sustain and power life on Earth, the captured energy has to be released and used in

More information

AN OVERVIEW OF PHOTOSYNTHESIS. Copyright 2009 Pearson Education, Inc.

AN OVERVIEW OF PHOTOSYNTHESIS. Copyright 2009 Pearson Education, Inc. AN OVERVIEW OF PHOTOSYNTHESIS Copyright 2009 Pearson Education, Inc. Introduction: Plant Power Plants use water and atmospheric carbon dioxide to produce a simple sugar and liberate oxygen Earth s plants

More information

Chapter 7. Photosynthesis: Using Light to Make Food. Lectures by Edward J. Zalisko

Chapter 7. Photosynthesis: Using Light to Make Food. Lectures by Edward J. Zalisko Chapter 7 Photosynthesis: Using Light to Make Food PowerPoint Lectures for Campbell Essential Biology, Fifth Edition, and Campbell Essential Biology with Physiology, Fourth Edition Eric J. Simon, Jean

More information

THE BASICS OF PHOTOSYNTHESIS

THE BASICS OF PHOTOSYNTHESIS THE BASICS OF PHOTOSYNTHESIS Almost all plants are photosynthetic autotrophs, as are some bacteria and protists Autotrophs generate their own organic matter through photosynthesis Sunlight energy is transformed

More information

Chapter 10 Photosynthesis

Chapter 10 Photosynthesis Chapter 10 Photosynthesis Autotrophs and Heterotrophs Autotrophs are organisms that make their own food. They obtain everything they need by using CO 2 and inorganic compounds from the environment. Heterotrophs

More information

Cellular Energy: Photosythesis

Cellular Energy: Photosythesis Cellular Energy: hotosythesis Cellular respiration and photosynthesis are chemical reactions that provide kinetic and potential energy for cells Sunlight energy hotosynthesis in chloroplasts Glucose +

More information

Photosynthesis: Using Light to Make Food

Photosynthesis: Using Light to Make Food Chapter 7 Photosynthesis: Using Light to Make Food Lectures by Chris C. Romero, updated by Edward J. Zalisko PowerPoint Lectures for Campbell Essential Biology, Fourth Edition Eric Simon, Jane Reece, and

More information

Overall, photosynthesis is the conversion of the Sun s energy to stored chemical energy. (glucose) The overall reaction for photosynthesis:

Overall, photosynthesis is the conversion of the Sun s energy to stored chemical energy. (glucose) The overall reaction for photosynthesis: A.P. Biology Chapter 10- Photosynthesis Scale: 0 - No understanding of the concept and chemical process of photosynthesis. 1- With help, a partial understanding of the reactants and products of the photosynthesis

More information

NOTES: CH 10, part 3 Calvin Cycle (10.3) & Alternative Mechanisms of C-Fixation (10.4)

NOTES: CH 10, part 3 Calvin Cycle (10.3) & Alternative Mechanisms of C-Fixation (10.4) NOTES: CH 10, part 3 Calvin Cycle (10.3) & Alternative Mechanisms of C-Fixation (10.4) 10.3 - The Calvin cycle uses ATP and NADPH to convert CO 2 to sugar The Calvin cycle, like the citric acid cycle,

More information

Chapter 10. Photosynthesis

Chapter 10. Photosynthesis Chapter 10 Photosynthesis Lecture Outline Overview Life on Earth is solar powered. The chloroplasts of plants use a process called photosynthesis to capture light energy from the sun and convert it to

More information

CHAPTER 8 PHOTOSYNTHESIS

CHAPTER 8 PHOTOSYNTHESIS CHAPTER 8 PHOTOSYNTHESIS Con. 8.1 Photosynthesis process by which plants use light to make food molecules from carbon dioxide and water (chlorophyll) 6CO 2 + 12H 2 O + Light C 6 H 12 O 6 + 6O 2 + 6H 2

More information

AP Biology Day 22. Monday, October 10, 2016

AP Biology Day 22. Monday, October 10, 2016 AP Biology Day 22 Monday, October 10, 2016 Discuss: Do-Now Group Discussion What is the equation for photosynthesis, and why is it a redox reaction? What are the steps of photosynthesis, and where does

More information

Overview - the process that feeds the biosphere. Photosynthesis: transformation of solar energy into chemical energy.

Overview - the process that feeds the biosphere. Photosynthesis: transformation of solar energy into chemical energy. Chapter 7 Capturing Solar Energy: Photosynthesis Overview - the process that feeds the biosphere Photosynthesis: transformation of solar energy into chemical energy. Responsible for O 2 in our atmosphere

More information

PHOTOSYNTHESIS: converts light energy to the chemical energy of food 6CO 2 + 6H 2 O + light energy C 6 H 12 O 6 + 6O 2

PHOTOSYNTHESIS: converts light energy to the chemical energy of food 6CO 2 + 6H 2 O + light energy C 6 H 12 O 6 + 6O 2 Photosynthesis Life on Earth is solar powered Photosynthesis nourishes almost all the living world directly or indirectly All organisms use organic compounds for energy and for carbon skeletons. Organisms

More information

Photosynthesis: Using Light to Make Food

Photosynthesis: Using Light to Make Food Chapter 7 Photosynthesis: Using Light to Make Food Lectures by Chris C. Romero, updated by Edward J. Zalisko 2010 Pearson Education, Inc. PowerPoint Lectures for Campbell Essential Biology, Fourth Edition

More information

Chapter 10. Photosynthesis

Chapter 10. Photosynthesis Chapter 10 Photosynthesis Lecture Outline Overview: The Process That Feeds the Biosphere Life on Earth is solar powered. The chloroplasts of plants use a process called photosynthesis to capture light

More information

Chapter 7. Photosynthesis: Using Light to Make Food. Lecture by Richard L. Myers

Chapter 7. Photosynthesis: Using Light to Make Food. Lecture by Richard L. Myers Chapter 7 Photosynthesis: Using Light to Make Food PowerPoint Lectures for Biology: Concepts & Connections, Sixth Edition Campbell, Reece, Taylor, Simon, and Dickey Lecture by Richard L. Myers Introduction:

More information

Photosynthesis Overview

Photosynthesis Overview Photosynthesis 1 2 Photosynthesis Overview Energy for all life on Earth ultimately comes from photosynthesis 6CO 2 + 12H 2 O C 6 H 12 O 6 + 6H 2 O + 6O 2 Oxygenic photosynthesis is carried out by Cyanobacteria

More information

Chapter 10. Photosynthesis

Chapter 10. Photosynthesis Chapter 10 Photosynthesis Lecture Outline Overview: The Process That Feeds the Biosphere Life on Earth is solar powered. The chloroplasts of plants use a process called photosynthesis to capture light

More information

Chapter 10. Photosynthesis. Concept 10.1 Photosynthesis converts light energy to the chemical energy of food

Chapter 10. Photosynthesis. Concept 10.1 Photosynthesis converts light energy to the chemical energy of food Chapter 10 Photosynthesis Lecture Outline Overview: The Process That Feeds the Biosphere Life on Earth is solar powered. The chloroplasts of plants use a process called photosynthesis to capture light

More information

Photosynthesis (Chapter 7 Outline) A. For life based on organic compounds, two questions can be raised:

Photosynthesis (Chapter 7 Outline) A. For life based on organic compounds, two questions can be raised: Photosynthesis (Chapter 7 Outline) Sun, Rain, and Survival A. For life based on organic compounds, two questions can be raised: 1. Where does the carbon come from? 2. Where does the energy come from to

More information

PHOTOSYNTHESIS. Chapter 10

PHOTOSYNTHESIS. Chapter 10 PHOTOSYNTHESIS Chapter 10 Modes of Nutrition Autotrophs self-feeders Capture free energy from physical sources in the environment Photosynthetic organisms = sunlight Chemosynthetic organisms = small inorganic

More information

Photosynthesis in Nature

Photosynthesis in Nature PHOTOSYNTHESIS Photosynthesis in Nature 1. Plants and other autotrophs are the producers of the biosphere 2. Chloroplasts are the site of photosynthesis in plants Introduction Life on Earth is solar powered.

More information

Photosynthesis. Chapter 10. Photosynthesis and Energy. Photosynthesis and Energy. Photosynthesis. Making food from light energy.

Photosynthesis. Chapter 10. Photosynthesis and Energy. Photosynthesis and Energy. Photosynthesis. Making food from light energy. Chapter 10 Photosynthesis BIOL 3 Photosynthesis and Energy Photosynthesis Making food from light energy Photoautotrophs Use CO and water to make sugars Made life possible as we know it Provides carbohydrates

More information

Metabolism 2 Photosynthesis

Metabolism 2 Photosynthesis Metabolism 2 Photosynthesis Light energy is trapped in the form of high energy electrons. High energy electrons are used to synthesize ATP and reduce CO 2 to form carbohydrates. Oxygen is produced as a

More information

Chapter 7. Photosynthesis: Using Light to Make Food. Lectures by Edward J. Zalisko

Chapter 7. Photosynthesis: Using Light to Make Food. Lectures by Edward J. Zalisko Chapter 7 Photosynthesis: Using Light to Make Food PowerPoint Lectures for Campbell Essential Biology, Fifth Edition, and Campbell Essential Biology with Physiology, Fourth Edition Eric J. Simon, Jean

More information

PHOTOSYNTHESIS CHAPTER 7. Where It Starts - Photosynthesis

PHOTOSYNTHESIS CHAPTER 7. Where It Starts - Photosynthesis PHOTOSYNTHESIS CHAPTER 7 Where It Starts - Photosynthesis IMPACTS, ISSUES: SUNLIGHT AND SURVIVAL Plants are autotrophs, or self-nourishing organisms The first autotrophs filled Earth s atmosphere with

More information

1. Plants and other autotrophs are the producers of the biosphere

1. Plants and other autotrophs are the producers of the biosphere 1. Plants and other autotrophs are the producers of the biosphere Photosynthesis nourishes almost all of the living world directly or indirectly. All organisms require organic compounds for energy and

More information

1. Plants and other autotrophs are the producers of the biosphere

1. Plants and other autotrophs are the producers of the biosphere 1. Plants and other autotrophs are the producers of the biosphere Photosynthesis nourishes almost all of the living world directly or indirectly. All organisms require organic compounds for energy and

More information

2015 AP Biology PRETEST Unit 3: Cellular Energetics Week of October

2015 AP Biology PRETEST Unit 3: Cellular Energetics Week of October Name: Class: _ Date: _ 2015 AP Biology PRETEST Unit 3: Cellular Energetics Week of 19-23 October Multiple Choice Identify the choice that best completes the statement or answers the question. 1) Which

More information

Just Like the Guy From Krypton Photosynthesis

Just Like the Guy From Krypton Photosynthesis Just Like the Guy From Krypton Photosynthesis An Overview of Photosynthesis Most of the energy used by almost all living cells ultimately comes from the sun plants, algae, and some bacteria capture the

More information

Chapter 7 Capturing Solar Energy: Photosynthesis. Chapter 7: Photosynthesis. What is Photosynthesis?

Chapter 7 Capturing Solar Energy: Photosynthesis. Chapter 7: Photosynthesis. What is Photosynthesis? Chapter 7 Capturing Solar Energy: Photosynthesis What is Photosynthesis? Answer: The capture of sunlight energy and the subsequent storage of that energy in the chemical bonds (e.g., glucose) Chemical

More information

Chapter 7. Photosynthesis: Using Light to Make Food. Lectures by Edward J. Zalisko

Chapter 7. Photosynthesis: Using Light to Make Food. Lectures by Edward J. Zalisko Chapter 7 Photosynthesis: Using Light to Make Food PowerPoint Lectures for Campbell Essential Biology, Fifth Edition, and Campbell Essential Biology with Physiology, Fourth Edition Eric J. Simon, Jean

More information

Chapter 7. Photosynthesis: Using Light to Make Food. Lectures by Edward J. Zalisko

Chapter 7. Photosynthesis: Using Light to Make Food. Lectures by Edward J. Zalisko Chapter 7 Photosynthesis: Using Light to Make Food PowerPoint Lectures for Campbell Essential Biology, Fifth Edition, and Campbell Essential Biology with Physiology, Fourth Edition Eric J. Simon, Jean

More information

pigments AP BIOLOGY PHOTOSYNTHESIS Chapter 10 Light Reactions Visible light is part of electromagnetic spectrum

pigments AP BIOLOGY PHOTOSYNTHESIS Chapter 10 Light Reactions Visible light is part of electromagnetic spectrum AP BIOLOGY PHOTOSYNTHESIS Chapter 10 Light Reactions http://vilenski.org/science/safari/cellstructure/chloroplasts.html Sunlight is made up of many different wavelengths of light Your eyes see different

More information

Photosynthesis. Nearly all of the usable energy on this planet came, at one time or another, from the sun by the process of photosynthesis

Photosynthesis. Nearly all of the usable energy on this planet came, at one time or another, from the sun by the process of photosynthesis Photosynthesis Nearly all of the usable energy on this planet came, at one time or another, from the sun by the process of photosynthesis Photosynthesis 6CO 2 + 12H 2 O C 6 H 12 O 6 + 6O 2 + 6H 2 O Pigments

More information

Photosynthesis and Life

Photosynthesis and Life 7-1 Chapter 7 Photosynthesis and Life During photosynthesis Organisms use the energy of light to build highenergy organic molecules. Plants, algae, and some bacteria can do this. Can make their own food

More information

Chapter 8 Photosynthesis Lecture Outline. Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

Chapter 8 Photosynthesis Lecture Outline. Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Chapter 8 Photosynthesis Lecture Outline Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 1 8.1 Overview of Photosynthesis Photosynthesis converts solar energy

More information

Photosynthesis. Chapter 8

Photosynthesis. Chapter 8 Photosynthesis Chapter 8 Photosynthesis Overview Energy for all life on Earth ultimately comes from photosynthesis 6CO 2 + 12H 2 O C 6 H 12 O 6 + 6H 2 O + 6O 2 Oxygenic photosynthesis is carried out by

More information

Photosynthesis: Using Light to Make Food

Photosynthesis: Using Light to Make Food Chapter 7 Photosynthesis: Using Light to Make Food PowerPoint Lectures for Campbell Essential Biology, Fourth Edition Eric Simon, Jane Reece, and Jean Dickey Campbell Essential Biology with Physiology,

More information

PHOTOSYNTHESIS. Light Reaction Calvin Cycle

PHOTOSYNTHESIS. Light Reaction Calvin Cycle PHOTOSYNTHESIS Light Reaction Calvin Cycle Photosynthesis Purpose: use energy from light to convert inorganic compounds into organic fuels that have stored potential energy in their carbon bonds Carbon

More information

PHOTOSYNTHESIS. Chapter 10

PHOTOSYNTHESIS. Chapter 10 PHOTOSYNTHESIS Chapter 10 Modes of Nutrition Autotrophs Capture from physical sources in the environment Photosynthetic organisms = sunlight Chemosynthetic organisms = small inorganic molecules (occurs

More information

PHOTOSYNTHESIS Chapter 6

PHOTOSYNTHESIS Chapter 6 PHOTOSYNTHESIS Chapter 6 5.1 Matter and Energy Pathways in Living Systems Chapter 5 Photosynthesis & Cellular Respiration 1 2 5.1 Matter and Energy Pathways in Living Systems In this section you will:

More information

Where It Starts - Photosynthesis

Where It Starts - Photosynthesis Where It Starts - Photosynthesis What Is Photosynthesis? The Rainbow Catchers Making ATP and NADPH Making Sugars Alternate Pathways What is Photosynthesis? Energy flow through ecosystems begins when photosynthesizers

More information

Photosynthesis in Detail. 3/19/2014 Averett

Photosynthesis in Detail. 3/19/2014 Averett Photosynthesis in Detail 1 In photosynthesis many chemical reactions, enzymes and ions work together in a precise order. Enzymes Biological catalyst Substance that initiates or speeds up the rate of a

More information

Photosynthesis. I. Photosynthesis overview A. Purpose B. Location. The light vs. the dark reaction Chloroplasts pigments A. Light absorption B.

Photosynthesis. I. Photosynthesis overview A. Purpose B. Location. The light vs. the dark reaction Chloroplasts pigments A. Light absorption B. Photosynthesis I. Photosynthesis overview A. Purpose B. Location II. III. The light vs. the dark reaction Chloroplasts pigments A. Light absorption B. Types IV. Light reactions A. Photosystems B. Photophosphorylation

More information

Photosynthesis 6CO 2 + 6H 2 O C 6 H 12 O 6 + 6O 2

Photosynthesis 6CO 2 + 6H 2 O C 6 H 12 O 6 + 6O 2 PHOTOSYNTHESIS Photosynthesis An anabolic, endergonic, carbon dioxide (CO 2 ) requiring process that uses light energy (photons) and water (H 2 O) to produce organic macromolecules (glucose). photons SUN

More information

Name AP Biology Photosynthesis Notes Mrs. Laux Photosynthesis: Capturing Energy I. Chloroplasts A. Facts: 1. double membrane 2.

Name AP Biology Photosynthesis Notes Mrs. Laux Photosynthesis: Capturing Energy I. Chloroplasts A. Facts: 1. double membrane 2. Photosynthesis: Capturing Energy I. Chloroplasts A. Facts: 1. double membrane 2. not part of endomembrane system 3. semi-autonomous organelles, grow and reproduce 4. found in plants, algae, cyanobacteria,

More information

Chapter 6. Capturing Solar Energy: Photosynthesis. Lectures by Gregory Ahearn. University of North Florida. Copyright 2009 Pearson Education, Inc.

Chapter 6. Capturing Solar Energy: Photosynthesis. Lectures by Gregory Ahearn. University of North Florida. Copyright 2009 Pearson Education, Inc. Chapter 6 Capturing Solar Energy: Photosynthesis Lectures by Gregory Ahearn University of North Florida Copyright 2009 Pearson Education, Inc. 6.1 What Is Photosynthesis? Life on earth depends on photosynthesis.

More information

Where It Starts: Photosynthesis. Chapter 5

Where It Starts: Photosynthesis. Chapter 5 Where It Starts: Photosynthesis Chapter 5 Photosynthesis Metabolic Pathways Converts light energy to chemical energy. Photoautotrophs Organisms that can perform photosynthesis Cyanobacteria (prokaryotic-no

More information

(A) Calvin cycle (B) Cyclic electron transfer (C) Non-cyclic electron transfer (D) Photorespiration (E) Cellular respiration

(A) Calvin cycle (B) Cyclic electron transfer (C) Non-cyclic electron transfer (D) Photorespiration (E) Cellular respiration AP Biology - Problem Drill 08: Photosynthesis No. 1 of 10 #01 1. What term does the statement below refer to? In a photosynthesis process, an electron is excited from P700 and delivered to its receptor,

More information

Outline - Photosynthesis

Outline - Photosynthesis Outlin Photosynthesis Photosynthesis 1. An Overview of Photosynthesis & Respiration 2. Autotrophs and producers 3. Electromagnetic Spectrum & light energy 4. Chloroplasts: Structure and Function 5. Photosynthetic

More information

Photosynthesis Overview. Photosynthesis Overview. Photosynthesis Overview. Photosynthesis

Photosynthesis Overview. Photosynthesis Overview. Photosynthesis Overview. Photosynthesis Photosynthesis Photosynthesis Overview Chapter 8 Energy for all life on Earth ultimately comes from photosynthesis. 6CO2 + 12H2O C6H12O6 + 6H2O + 6O2 Oxygenic photosynthesis is carried out by: cyanobacteria,

More information

Photosynthesis Life Is Solar Powered!

Photosynthesis Life Is Solar Powered! Photosynthesis Life Is Solar Powered! What Would Plants Look Like On Alien Planets? 1 Why Would They Look Different? Different Stars Give off Different types of light or Electromagnetic Waves The color

More information