6.3 Overview of Photosynthesis

Size: px
Start display at page:

Download "6.3 Overview of Photosynthesis"

Transcription

1 6.3 Overview of Photosynthesis Chloroplast location of photosynthesis in plants and protists 3 membranes 2 make up the stroma Semifluid matrix Location of sugar production 1 makes up the thylakoid membrane Forms thylakoids Thylakoid membrane starts photosynthesis

2 6.3 Overview of Photosynthesis Photosynthesis proceeds in two stages Light-dependent reactions light energy converted to chemical bond energy (ATP) Light-independent reactions runs on ATP and NADPH and it drives synthesis of carbohydrates (glucose) Summary equation: 6H 2 O + 6CO 2 6O 2 + C 6 H 12 O 6

3 Summary - Light Dependent reaction Water molecules are split NADP+ (Nicotinamide adenine dinucleotide phosphate) accepts released hydrogen and electrons and becomes NADPH Oxygen escapes

4 Summary - Light independent reaction Runs on ATP and NADPH Energy forms carbohydrates (glucose) from carbon dioxide and water

5 Sites of Photosynthesis: Chloroplasts Light-dependent reactions occur at a muchfolded thylakoid membrane Forms a single, continuous compartment inside the stroma (chloroplast s semifluid interior) Light-independent reactions occur in the stroma

6 Sites of Photosynthesis

7 two outer membranes of chloroplasts stroma part of thylakoid membrane system bathed in stroma: thylakoid compartment, cutaway view b Chloroplast structure. No matter how highly folded, its thylakoid membrane system forms a single, continuous compartment in the stroma. Fig. 6.6b, p.97

8 Sites of Photosynthesis

9 Products of Light-Dependent Reactions Typically, sunlight energy drives the formation of ATP and NADPH Oxygen is released from the chloroplast (and the cell)

10 Key Concepts: OVERVIEW OF PHOTOSYNTHESIS Photosynthesis proceeds through two stages in chloroplasts of plants and many types of protists First, pigments in a membrane inside the chloroplast capture light energy, which is converted to chemical energy Second, chemical energy drives synthesis of carbohydrates

11 6.4 Light-Dependent Reactions Two types of photosystems In thylakoid membrane Light-harvesting complexes Absorb light energy and pass it to photosystems which then release electrons Electrons enter light-dependent reactions Figure 6.8

12 Noncyclic Photophosphorylation Electrons released from photosystem II flow through an electron transfer chain At end of chain, they enter photosystem I Photon energy causes photosystem I to release electrons, which end up in NADPH Photosystem II replaces lost electrons by pulling them from water (photolysis)

13 Noncyclic Photophosphorylation

14 Cyclic Photophosphorylation Electrons released from photosystem I enter an electron transfer chain, then cycle back to photosystem I NADPH does not form, oxygen is not released

15 ATP Formation In both pathways, electron flow through electron transfer chains causes H + to accumulate in the thylakoid compartment A hydrogen ion gradient builds up across the thylakoid membrane H + flows back across the membrane through ATP synthases Results in formation of ATP in the stroma

16 energy 6.5 Energy Flow in Light-Dependent Reactions excited P700 light energy a Energy from light-harvesting complexes causes photosystem I to lose electrons. P700 Photosystem I CYCLIC PHOTOPHOSPHORYLATION b Electrons give up energy as they pass through an electron transfer chain. The energy drives H+ across the thylakoid membrane, against its gradient. The electrons reenter photosystem I. Fig. 6.9ab, p.100

17 energy Photosystem II excited P Energy Flow in Light-Dependent Reactions excited P700 NADPH light energy light energy water P680 O 2 + H+ P700 Photosystem I NONCYCLIC PHOTOPHOSPHORYLATION c. Energy from a lightharvesting complex drives electrons out of photosystem II. Then, the photosystem pulls replacement electrons d. Electrons from photosystem II pass through an electron transfer chain. Energy lost at each step moves H+ across the thylakoid membrane. At the end of the chain, the electrons enter photosystem e. NADP+ combines with hydrogen and with electrons driven from photosystem II by energy from a light-harvesting complex. Fig. 6.9cde, p.100

18 Key Concepts: MAKING ATP AND NADPH In the first stage of photosynthesis, sunlight energy is converted to the chemical bond energy of ATP The coenzyme NADPH forms in a pathway that also releases oxygen

19 6.6 Light Independent Reactions: The Sugar Factory Light-independent reactions proceed in the stroma Carbon fixation: Enzyme rubisco attaches carbon from CO 2 to RuBP to start the Calvin Benson cycle

20 Calvin Benson Cycle Cyclic pathway makes phosphorylated glucose Uses energy from ATP, carbon and oxygen from CO 2, and hydrogen and electrons from NADPH Reactions use glucose to form photosynthetic products (sucrose, starch, cellulose) Six turns of Calvin Benson cycle fix six carbons required to build a glucose molecule from CO 2

21 f It takes six turns of the Calvin Benson cycle (six carbon atoms) to produce one glucose molecule and regenerate six RuBP. Light-Independent Reactions 6CO 2 a CO2 in air spaces inside a leaf diffuses into a photosynthetic cell. Six times, rubisco attaches a carbon atom from CO2 to the RuBP that is the starting compound for the Calvin Benson cycle. e Ten of the PGAL get phosphate groups from ATP. In terms of energy, this primes them for an uphill run for the endergonic synthesis reactions that regenerate RuBP. d The phosphorylated glucose enters reactions that form carbohydrate products mainly sucrose, starch, and cellulose. 6 6 ADP ATP 4 P i 6 RuBP 10 PGAL 1 P i Calvin-Benson cycle phosphorylated glucose 12 PGA 12 ATP 12 PGAL 12 ADP + 12 P i 12 NADPH 12 NADP + b Each PGA molecule gets a phosphate group from ATP, plus hydrogen and electrons from NADPH. The resulting intermediate is called PGAL. c Two of the twelve PGAL molecules combine to form a molecule of glucose with an attached phosphate group. Fig. 6.10, p.101

Sunlight as an Energy Source

Sunlight as an Energy Source Photosynthesis Sunlight as an Energy Source Photosynthetic organisms use pigments to capture the energy of sunlight Photosynthesis The synthesis of organic molecules from inorganic molecules using the

More information

Photosynthesis. Photosynthesis is the process of harnessing the energy of sunlight to make carbohydrates (sugars).

Photosynthesis. Photosynthesis is the process of harnessing the energy of sunlight to make carbohydrates (sugars). Photosynthesis Photosynthesis is the process of harnessing the energy of sunlight to make carbohydrates (sugars). Plants do photosynthesis to make their own food (sugars) and are called, photoautotrophs.

More information

Photosynthesis: Life from Light AP Biology

Photosynthesis: Life from Light AP Biology Photosynthesis: Life from Light Supporting a biosphere On global scale, photosynthesis is the most important process for the continuation of life on Earth u each year photosynthesis synthesizes 160 billion

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

Chapter 7: Photosynthesis

Chapter 7: Photosynthesis Chapter 7: Photosynthesis Electromagnetic Spectrum Shortest wavelength Longest wavelength Gamma rays X-rays UV radiation Visible light Infrared radiation Microwaves Radio waves Photons Packets of light

More information

8.2 Photosynthesis Draw and label a diagram showing the structure of a chloroplast as seen in electron micrographs

8.2 Photosynthesis Draw and label a diagram showing the structure of a chloroplast as seen in electron micrographs 8.2 Photosynthesis 8.2.1 - Draw and label a diagram showing the structure of a chloroplast as seen in electron micrographs double membrane starch grain grana thylakoid internal membrane - location of the

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

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

Located in the thylakoid membranes. Chlorophyll have Mg + in the center. Chlorophyll pigments harvest energy (photons) by absorbing certain

Located in the thylakoid membranes. Chlorophyll have Mg + in the center. Chlorophyll pigments harvest energy (photons) by absorbing certain a review Located in the thylakoid membranes. Chlorophyll have Mg + in the center. Chlorophyll pigments harvest energy (photons) by absorbing certain wavelengths (blue-420 nm and red-660 nm are most important).

More information

Chapter 8 Photosynthesis

Chapter 8 Photosynthesis Chapter 8 Photosynthesis THE BASICS OF PHOTOSYNTHESIS Photosynthesis is used by plants, algae (protists), and some bacteria uses the energy from sunlight to convert water and carbon dioxide into high-energy

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

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

Harvesting energy: photosynthesis & cellular respiration part 1

Harvesting energy: photosynthesis & cellular respiration part 1 Harvesting energy: photosynthesis & cellular respiration part 1 Agenda I. Overview (Big Pictures) of Photosynthesis & Cellular Respiration II. Making Glucose - Photosynthesis III. Making ATP - Cellular

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

Chapter 6 Where It Starts Photosynthesis

Chapter 6 Where It Starts Photosynthesis Chapter 6 Where It Starts Photosynthesis 6.1 Biofuels Coal, petroleum, and natural gas are fossil fuels the remains of ancient forests, a limited resource Biofuels such as oils, gases, or alcohols are

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

Photosynthesis Review Packet

Photosynthesis Review Packet Photosynthesis Review Packet Model 1 Chloroplast 6CO2 + 12H2O + sunlight energy C6H12O6 + 6O2 + 6H2O 12 H2O 6 CO2 6 O2 C6H12O6 1. Consider the organelle illustrated in Model 1. a. What is the name of the

More information

Photosynthesis 05/03/2012 INTRODUCTION: Summary Reaction for Photosynthesis: CO 2 : H 2 O: chlorophyll:

Photosynthesis 05/03/2012 INTRODUCTION: Summary Reaction for Photosynthesis: CO 2 : H 2 O: chlorophyll: Photosynthesis INTRODUCTION: metabolic process occurring in green plants, algae, some protists and cyanobacteria Photosynthesis is an PROCESS (building organic molecules which store radiant energy as chemical

More information

Metabolismo Biología de 12º

Metabolismo Biología de 12º DEPARTAMENTO DE CIENCIAS NATURALES Metabolismo Biología de 12º Nombre y Apellidos FOTOSÍNTESIS 1) Organisms that can exist with light as an energy source and an inorganic form of carbon and other raw materials

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 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

Lecture Series 13 Photosynthesis: Energy from the Sun

Lecture Series 13 Photosynthesis: Energy from the Sun Lecture Series 13 Photosynthesis: Energy from the Sun Photosynthesis: Energy from the Sun A. Identifying Photosynthetic Reactants and Products B. The Two Pathways of Photosynthesis: An Overview C. Properties

More information

Photosynthesis: Life from Light and Air

Photosynthesis: Life from Light and Air Photosynthesis: Life from Light and Air 2007-2008 Energy needs of life All life needs a constant input of energy consumers producers Heterotrophs (Animals) get their energy from eating others eat food

More information

The conversion of usable sunlight energy into chemical energy is associated with the action of the green pigment chlorophyll.

The conversion of usable sunlight energy into chemical energy is associated with the action of the green pigment chlorophyll. Photosynthesis Photosynthesis is the process by which plants, some bacteria and some protistans use the energy from sunlight to produce glucose from carbon dioxide and water. This glucose can be converted

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

4.1. Photosynthesis Light-Dependent Reactions

4.1. Photosynthesis Light-Dependent Reactions 4.1 Photosynthesis Light-Dependent Reactions Photosynthesis Each year, Canada s boreal forest convert 12.5 million tonnes of carbon into energy-rich compounds for billions of organisms Photosynthesis

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

LEAF Describe the structure of A dicotyledonous leaf A Palisade cell Chloroplast 2

LEAF Describe the structure of A dicotyledonous leaf A Palisade cell Chloroplast 2 Photosynthesis By: K. Foster-McFarlane L.M.S.N.; MSc.; BSc. 602 Biology 1 LEAF Describe the structure of A dicotyledonous leaf A Palisade cell Chloroplast 2 3 4 5 6 Keisha FosterFoster-McFarlane 7 8 9

More information

Photosynthesis. Dr. Bertolotti

Photosynthesis. Dr. Bertolotti Photosynthesis Dr. Bertolotti Photosynthesis: Life from Light and Air How do plants and other organisms capture energy from the sun? What is ATP and why is it useful in cells? Plants are energy producers

More information

6.6 Light Independent Reactions: The Sugar Factory

6.6 Light Independent Reactions: The Sugar Factory 6.6 Light Independent Reactions: The Sugar Factory Light-independent reactions proceed in the stroma Carbon fixation: Enzyme rubisco attaches carbon from CO 2 to RuBP to start the Calvin Benson cycle Calvin

More information

Photosynthesis

Photosynthesis Student Expectations: Cellular Energy Understand that cellular energy is temporarily stored in the nucleotide ATP (adenosine triphosphate) Describe how energy is released by ATP When the outer phosphate

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. From Sunlight to Sugar

Photosynthesis. From Sunlight to Sugar Photosynthesis From Sunlight to Sugar What is Photosynthesis? Photosynthesis is a process that captures energy from sunlight to make sugars used as food for producers. The light energy is stored as chemical

More information

Section 2 The Calvin Cycle

Section 2 The Calvin Cycle Section 2 The Calvin Cycle Objectives Summarize the main events of the Calvin cycle. Describe what happens to the compounds that are made in the Calvin cycle. Distinguish between C 3, C 4, and CAM plants.

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

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

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

6CO 2 + 6H 2 O + Sunlight C 6 H 12 O 6 +6O 2 6CO 2 + 6H 2 O + Sunlight C 6 H 12 O 6 +6O 2 Process Location Reactants (Starting) Products (Ending) Light Reactions Calvin Cycle Introduction to Photosynthesis Mrs. Meyer Target SWBAT describe the reactants

More information

Photosynthesis. Excitation of chlorophyll in a chloroplast

Photosynthesis. Excitation of chlorophyll in a chloroplast Photosynthesis The process of photosynthesis begins with light-absorbing pigments in plant cells. A pigment molecule is able to absorb the energy from light only within a narrow range of wavelengths. In

More information

ATP. Pentose Sugar (ribose) 3 phosphate groups. adenine. Does this structure look familiar?

ATP. Pentose Sugar (ribose) 3 phosphate groups. adenine. Does this structure look familiar? Photosynthesis The Big Picture Photosynthesis and Respiration work together in plants to make energy for the plant they are autotrophs Animals only use cellular respiration why? They are heterotrophs!

More information

Photosynthesis. Light-dependent Reactions

Photosynthesis. Light-dependent Reactions Photosynthesis Light-dependent Reactions video http://www.youtube.com/watch?v=hj_wkgnl 6MI&feature=related Overview Photosynthesis transforms the radiant energy from the sun into the chemical energy of

More information

Lesson Overview. 8.3 The Process of Photosynthesis

Lesson Overview. 8.3 The Process of Photosynthesis 8.3 The Process of Photosynthesis The Light-Dependent Reactions: Generating ATP and NADPH The light-dependent reactions encompass the steps of photosynthesis that directly involve sunlight. The light-dependent

More information

Photosynthesis. All Materials Cmassengale

Photosynthesis. All Materials Cmassengale Photosynthesis All Materials Cmassengale I. Capturing the Energy of Life A. All organisms require energy B. Some organisms (autotrophs) obtain energy directly from the sun and store it in organic compounds

More information

AP Biology. Photosynthesis

AP Biology. Photosynthesis Photosynthesis Redox Reactions break bonds & move electrons from one molecule to another as electrons move they carry energy with them that energy is stored in another bond, released as heat or harvested

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

WJEC UNIT 3. ATP & Photosynthesis. Tyrone. R.L. John

WJEC UNIT 3. ATP & Photosynthesis. Tyrone. R.L. John WJEC UNIT 3 ATP & Photosynthesis 1 Adenosine Triphosphate (ATP) Revision from unit 1 1. ATP is a nucleotide. Label the components of the ATP molecule below: In the space below draw a simplified diagram

More information

Chapter 7 PHOTOSYNTHESIS

Chapter 7 PHOTOSYNTHESIS Chapter 7 PHOTOSYNTHESIS Photosynthesis Photosynthesis is the process of harnessing energy from sunlight to produce sugars. Photosynthesis equation: Energy + 6 CO 2 + 6 H 2 O C 6 H 12 O 6 + 6 O 2 C 6 H

More information

1. Photosynthesis is the process of making a simple organic molecule from inorganic compounds (molecules) utilizing light energy.

1. Photosynthesis is the process of making a simple organic molecule from inorganic compounds (molecules) utilizing light energy. PHOTOSYNTHESIS A. INTRODUCTION 1. Photosynthesis is the process of making a simple organic molecule from inorganic compounds (molecules) utilizing light energy. a. It takes energy input for synthesis.

More information

A + B = C C + D = E E + F = A

A + B = C C + D = E E + F = A Photosynthesis - Plants obtain energy directly from the sun - Organisms that do this are autotrophs (make their own food from inorganic forms) - Photosynthesis is a series of chemical reactions where the

More information

1 P a g e h t t p s : / / w w w. c i e n o t e s. c o m / Photosynthesis (chapter 12):

1 P a g e h t t p s : / / w w w. c i e n o t e s. c o m / Photosynthesis (chapter 12): 1 P a g e h t t p s : / / w w w. c i e n o t e s. c o m / Photosynthesis (chapter 12): Photosynthesis is the fixation of CO 2 and its subsequent reduction to carbohydrate, using hydrogen from water, taking

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. light

Photosynthesis. light Photosynthesis light 6CO + 6H 0 C 6 H 1 O 6 + 6O light Carbon dioxide + water sugar + oxygen Chlorophyll pigment that absorbs light energy Absorbs red and blue light Reflects green and yellow light Chlorophyll

More information

Photosynthesis Prep Test

Photosynthesis Prep Test Photosynthesis Prep Test Multiple Choice Identify the choice that best completes the statement or answers the question. 1. What are the three parts of an ATP molecule? a. adenine, thylakoid, and a phosphate

More information

Sunlight and Survival. Plants are photoautotrophs; they use sunlight and CO2 to produce sugar in the process of photosynthesis

Sunlight and Survival. Plants are photoautotrophs; they use sunlight and CO2 to produce sugar in the process of photosynthesis Photosynthesis Sunlight and Survival Plants are photoautotrophs; they use sunlight and CO2 to produce sugar in the process of photosynthesis Energy From The Sun Many kinds of energy Wavelengths of visible

More information

Photosynthesis and Cellular Respiration

Photosynthesis and Cellular Respiration Photosynthesis and Cellular Respiration Photosynthesis and Cellular Respiration All cellular activities require energy. Directly or indirectly nearly all energy for life comes from the sun. Autotrophs:

More information

Biology I Photosynthesis. O + sunlight energy C 6. Outer membrane. Inner membrane

Biology I Photosynthesis. O + sunlight energy C 6. Outer membrane. Inner membrane Name: Why? Biology I Photosynthesis How do light-dependent and light-independent reactions provide food for a plant? Plants are the original solar panels. Through photosynthesis a plant is able to convert

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

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

Energy can be transformed from one form to another. FREE ENERGY (available for work) vs. HEAT (not available for work)

Energy can be transformed from one form to another. FREE ENERGY (available for work) vs. HEAT (not available for work) PHOTOSYNTHESIS Energy can be transformed from one form to another FREE ENERGY (available for work) vs. HEAT (not available for work) THE SUN: MAIN SOURCE OF ENERGY FOR LIFE ON EARTH THE BASICS OF PHOTOSYNTHESIS

More information

1 Which of the following organisms do NOT carry on photosynthesis?

1 Which of the following organisms do NOT carry on photosynthesis? 1 Which of the following organisms do NOT carry on photosynthesis? plants algae some bacteria 2 3 animals The correct description of the relationship between photosynthesis and the living world is. herbivores,

More information

Chapter 8: Cellular Energy

Chapter 8: Cellular Energy Chapter 8: Cellular Energy Section 1: How Organisms Obtain Energy Transformation of Energy All cellular activities require Energy!! ( The ability to do work). The study of flow and the transformation of

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

PHOTOSYNTHESIS. Botany Department B.N.D. College

PHOTOSYNTHESIS. Botany Department B.N.D. College PHOTOSYNTHESIS Botany Department B.N.D. College Photosynthesis An anabolic, endergonic, carbon dioxide (CO 2 ) requiring process that uses light energy (photons) and water (H 2 O) to produce organic macromolecules

More information

Overview of Photosynthesis

Overview of Photosynthesis Overview of Photosynthesis Introduction to Biochemistry - Part II 1 Autotrophs & Heterotrophs The energy available in most food comes from the sun, whether directly or indirectly Plants and some other

More information

Photosynthesis in Detail

Photosynthesis in Detail 4.3 Photosynthesis in Detail KEY CONCEPT Photosynthesis requires a series of chemical reactions. MAIN IDEAS The first stage of photosynthesis captures and transfers energy. The second stage of photosynthesis

More information

light-dependent reactions (i.e., light reactions)

light-dependent reactions (i.e., light reactions) LEARNING OBJECTIVES By the end of this lecture you will be able to: 1. Understand that ENERGY can be transformed from one form to another. 2. Know that energy exist in two forms; free energy - available

More information

Energy can be transformed from one form to another

Energy can be transformed from one form to another LEARNING OBJECTIVES By the end of this lecture you will be able to: Photosynthesis 1. Understand that ENERGY can be transformed from one form to another. 2. Know that energy exist in two forms; free energy

More information

Unit 4.2: Photosynthesis - Sugar as Food

Unit 4.2: Photosynthesis - Sugar as Food Unit 4.2: Photosynthesis - Sugar as Food Lesson Objectives Outline the stages of photosynthesis. Describe the chloroplast and its role in photosynthesis. List the steps of the light reactions. Describe

More information

Chapter 5: Photosynthesis: The Energy of Life pg : Pathways of Photosynthesis pg

Chapter 5: Photosynthesis: The Energy of Life pg : Pathways of Photosynthesis pg UNIT 2: Metabolic Processes Chapter 5: Photosynthesis: The Energy of Life pg. 210-240 5.2: Pathways of Photosynthesis pg. 220-228 Light Dependent Reactions Photosystem II and I are the two light capturing

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

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 Thursday, July 7, 2011

Photosynthesis Thursday, July 7, 2011 Photosynthesis Photosynthesis in Overview Process by which plants and other autotrophs store the energy of sunlight into sugars. Requires sunlight, water, and carbon dioxide. Overall equation: 6 CO 2

More information

Photosynthesis Overview

Photosynthesis Overview 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

AHL Topic 8 IB Biology Miss Werba

AHL Topic 8 IB Biology Miss Werba CELL RESPIRATION & PHOTOSYNTHESIS AHL Topic 8 IB Biology Miss Werba TOPIC 8 CELL RESPIRATION & PHOTOSYNTHESIS 8.1 CELL RESPIRATION 1. STATE that oxidation involves the loss of electrons from an element,

More information

Energy and Life. Lesson Overview. Lesson Overview. 8.1 Energy and Life

Energy and Life. Lesson Overview. Lesson Overview. 8.1 Energy and Life 8.1 Chemical Energy and ATP Energy is the ability to do work. Your cells are busy using energy to build new molecules, contract muscles, and carry out active transport. Without the ability to obtain and

More information

Section 1 The Light Reactions. Section 2 The Calvin Cycle. Resources

Section 1 The Light Reactions. Section 2 The Calvin Cycle. Resources How to Use This Presentation To View the presentation as a slideshow with effects select View on the menu bar and click on Slide Show. To advance through the presentation, click the right-arrow key or

More information

Chapter 8 Notes Photosynthesis

Chapter 8 Notes Photosynthesis Name: Date: Chapter 8 Notes Photosynthesis Section 8-2 & 8-3 Photosynthesis: An Overview (p. 204-214) The study of energy capture and use begins with. Photosynthesis is the process in which plants use

More information

Autotrophs and Heterotrophs

Autotrophs and Heterotrophs Section 8-1 Notes Energy and Life Energy is the ability to do work. Living things depend on energy. Without the ability to obtain and use energy, life would cease to exist. Where does the energy that living

More information

PHOTOSYNTHESIS. The Details

PHOTOSYNTHESIS. The Details PHOTOSYNTHESIS The Details Photosynthesis is divided into 2 sequential processes: 1. The Light Dependent Reactions (stages 1 & 2) 2. The Light Independent Reactions (stage 3) a.k.a. the Calvin Cycle THE

More information

Photosynthesis Part I: Overview & The Light-Dependent Reac<ons

Photosynthesis Part I: Overview & The Light-Dependent Reac<ons Photosynthesis Part I: Overview & The Light-Dependent Reac

More information

Chapter 8: Photosynthesis

Chapter 8: Photosynthesis Name: KEY Class: Date Chapter 8: Photosynthesis Section 8-1 Energy and Life (pages 201-203) Autotrophs and Heterotrophs (page 201) 1. Where does the energy of food originally come from? The sun, plants

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

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

The Life of a Cell. The Chemistry of Life. A View of the Cell. Cellular Transport and the Cell Cycle. Energy in a Cell

The Life of a Cell. The Chemistry of Life. A View of the Cell. Cellular Transport and the Cell Cycle. Energy in a Cell The Life of a Cell The Chemistry of Life A View of the Cell Cellular Transport and the Cell Cycle Energy in a Cell Chapter 9 Energy in a Cell 9.1: The Need for Energy 9.1: Section Check 9.2: Photosynthesis:

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

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

Chapter 4 Photosynthesis

Chapter 4 Photosynthesis Chapter 4 Photosynthesis RECAP Autotrophs Organisms that make their own food Heterotrophs cannot make their own food get energy from other organisms Photoautotroph use the suns energy Chemoautotroph use

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

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

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

Photosynthesis. Energy & Life

Photosynthesis. Energy & Life Photosynthesis Energy & Life 1 Overview of Photosynthesis 2 Autotrophs Plants and some other types of organisms that contain chlorophyll are able to use light energy from the sun to produce food. 3 Autotrophs

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: THE LIGHT REACTIONS

PHOTOSYNTHESIS: THE LIGHT REACTIONS PHOTOSYNTHESIS: THE LIGHT REACTIONS ECOSYSTEM Photosynthesis CO 2 +H 2 O Organic + O molecules 2 Cellular respiration in mitochondria 1 PHOTOAUTOTROPHS The producers of the biosphere AUTOTROPH means self

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

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

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

Endosymbiotic Theory. p

Endosymbiotic Theory. p Endosymbiotic Theory p. 427-428 The Endosymbiotic Theory Review: What is a theory? What is the difference between prokaryotic and eukaryotic cells? The endosymbiotic theory is the idea that a long time

More information

Photosynthesis Prep Test 2

Photosynthesis Prep Test 2 Photosynthesis Prep Test 2 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Energy is released from ATP when a. a phosphate group is added. b. adenine bonds

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