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AP Biology Photosynthesis Part 3.

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Presentation on theme: "AP Biology Photosynthesis Part 3."— Presentation transcript:

1 AP Biology Photosynthesis Part 3

2 Photosynthesis Light Reaction

3 Photosynthesis Calvin Cycle

4 Calvin Cycle step 1

5 Calvin Cycle step 2

6 Calvin Cycle step 3

7 C4 Plants and Photorespiration
Mesophyll cell Mesophyll cell CO2 Photosynthetic cells of C4 plant leaf PEP carboxylase Bundle- sheath cell The C4 pathway Oxaloacetate (4 C) PEP (3 C) Vein (vascular tissue) ADP Malate (4 C) ATP C4 leaf anatomy Pyruvate (3 C) Bundle- sheath cell Stoma CO2 CALVIN CYCLE Sugar Vascular tissue

8 CAM Plants and Photorespiration
Sugarcane Pineapple C4 CAM CO2 CO2 Mesophyll cell CO2 incorporated into four-carbon organic acids (carbon fixation) Night Organic acid Organic acid Bundle- sheath cell CO2 CO2 Day Organic acids release CO2 to Calvin cycle CALVIN CYCLE CALVIN CYCLE Sugar Sugar Spatial separation of steps Temporal separation of steps

9 Stomata of Leaves & Transpiration

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