AP Biology Photosynthesis Part 3.

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Presentation transcript:

AP Biology Photosynthesis Part 3

Photosynthesis Light Reaction

Photosynthesis Calvin Cycle

Calvin Cycle step 1

Calvin Cycle step 2

Calvin Cycle step 3

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

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

Stomata of Leaves & Transpiration

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