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1 AGENDA ABSENT TUE 1/15 week-2 HONORS TOPIC: REV photo basics / PRE-LAB OBJ : 4-6 DO NOW: WRITE the chemical equation for PHOTOSYNTHESIS EXT: DUE DATE: DW: 8.2 PRELAB [including VIDEO walk through]?? REV/COMPLETE 8.2 APP NTS -8.2 PRELAB HANDOUTS to PICK-UP: -8.2 LAB TURN IN to ABS box: - SEMINAR : - BEFORE SCHOOL/RAVEN-50: DW- 8.2 APP NTS EXIT: CIRCLE LEVEL of UNDERSTANDING [see slide]

2 TUE 1/15 week-2 TOPIC: REV photo basics / PRE-LAB OBJ : 4-6 AGENDA ABSENT DO NOW: WRITE the chemical equation for PHOTOSYNTHESIS EXT: DUE DATE: DW: NONE REV/COMPLETE 8.2 APP NTS -8.2 PRELAB HANDOUTS to PICK-UP: -8.2 LAB TURN IN to ABS box: - SEMINAR : - BEFORE SCHOOL/RAVEN-50: DW- 8.2 APP NTS EXIT: CIRCLE LEVEL of UNDERSTANDING [see slide]

3 UNIT OBJECTIVES 8.2 PHOTOSYNTHESIS 4- IDENTIFY the components of the chemical formula for photosynthesis [molecules/reactants/products] 5- SUMMARIZE the function of the chloroplast during the two phases of photosynthesis 6- DESCRIBE and DIAGRAM the process of photosynthesis on the cellular & organismal levels

4 TUE PEER # Write this in RED PEN 8.2 APP NTS RED X in BOX DW GRADE:

5 DW -GRADE RUBRIC

6 RED PEN out & ready 8.2 APP NT REVIEW

7 OVERVIEW OF PHOTOSYNTHESIS LIST organisms that carry out photosynthesis -photoautotrophs LIST the organelle where photosynthesis takes place -chloroplast thylakoid stroma IDENTIFY the chemical equation for photosynthesis: 6CO 2 6H 2 O 6O 2 C 6 H 12 O [REACTANTS] light [PRODUCTS] IDENTIFY the energy form used during photosynthesis chemcial light IDENTIFY the energy form produced during photosynthesis chemcial light

8 8.2 APP NTS

9 IMPORTANT STRUCTURES -INTERNAL STRUCTURE: leaf tissue CHLOROPLAST

10 IMPORTANT STRUCTURES- CHLOROPLAST CHLOROPLAST -located in the cell of leaves -found in the middle layer

11 IMPORTANT STRUCTURES- CHLOROPLAST THYLAKOIDS - coins -phase I GRANUM- stack of coins STROMA- space -phase II INNER/OUTER MEMBRANE -phospholipid bilayer -carbs transported across membrane

12 DRAW

13 IMPORTANT STRUCTURES- SURFACE STOMATAopenings in leaf allow exchange of water/gases GUARD CELLSopen & close stomata by changing shape Photosynthesis Animation Open Closed

14 IMPORTANT STRUCTURES- PIGMENTS PIGMENTS -light absorbing colored molecules -found in thylakoids of chloroplast CHLOROPHYLL -major light absorbing pigment in plants -gathers sunlight -absorbs light in all wavelengths [violet-blue] -EXCEPT GREEN / Reflects GREEN

15 IMPORTANT STRUCTURES- PIGMENTS PIGMENTS -light absorbing colored molecules -found in thylakoids of chloroplast CHLOROPHYLL -major light absorbing pigment in plants -gathers sunlight -absorbs light in all wavelengths [violet-blue] -EXCEPT GREEN / Reflects GREEN

16 FACTORS THAT AFFECT THE RATE OF PHOTOSYNTHESIS 1-TEMPERATURE Ex-molecule move quickly/speed up -temp 35 destroy enzyme/rate 2-LIGHT INTENSITY Ex-reach max rate 3-CO 2 CONCENTRATION Ex-increase 4-WATER Ex-shortage slows/stomata close -rate of gas exchange 5-MINERALS Ex-Mg/N chlorophyll

17 PHASE I- PHASE ONE: LIGHT REACTIONS light-dependent NAME: Light reactions OCCURS IN: thylakoids STARTS WITH: light energy / H 2 O / [ADP/NADP+] PRODUCES: -O 2 [wastes] -ATP / NADPH [energy storing molecules]

18 ETC

19 PHASE ONE: LIGHT REACTIONS -sunlight splits water molecules-h 2 O -excites electrons ~ e - gain ENERGY -releases oxygen gas- O 2 [waste product] -H + (protons) needed to make food [glucose] PHOTOSYSTEM II ELECTRON CARRIER- -accepts/transports high energy e - -convert ADP and NADP + energy carriers ATP and NADPH PHOTOSYSTEM I

20 PHASE TWO: CALVIN CYCLE PHASE 2-light-independent NAME: CALVIN CYCLE OCCURS IN: stroma STARTS WITH: CO 2 ATP [energy] PRODUCES: NADPH [high energy electrons] -GLUCOSE [6 carbon sugar] -ADP / NADP + [return to light-dependent phase] The Calvin Cycle

21 PHASE ONE/PHASE TWO IMPORTANCE -O 2 -GLUCOSE

22 EXIT CIRCLE-level of understanding of today s objective Q s / clarifications- EXIT- REFLECT & COMPLETE OBJ 4-6