Photosynthesis II Flashcards
Stages of Photosynthesis
-Light Dependent Reactions
-Light Independent Reactions
Stages of Photosynthesis:
-Visible light required
-Photo part of photosynthesis
Light Dependent Reaction
Stages of Photosynthesis:
-Visible light not required
-Synthesis part of photosynthesis
-Often inappropriately called the dark reactions
Light Independent Reaction
Purpose of Synthesis?
Reduce inorganic atmospheric carbon to carbohydrate
What is need in synthesis?
_Co2
-Electrons to reduce CO2
-NaDPH
-Energy to drive anabolic reactions
-ATP
Converts inorganic CO2 into carbohydrates
-Use chemical energy (ATP & NADPH)
Calvin Cycle
True/False: The final product for calvin cycle is glucose
False
What is the product of the Calvin cycle?
Glyceraldehyde Phosphate (G3P)
-Carbon Fixation
-Reduction
-Regeneration of CO2 Acceptor
3 phases of calvin cycle
Phase of Calvin Cycle:
Covalent attachment of inorganic carbon to an organic receptor molecules
Carbon Fixation
Phase of Calvin Cycle:
The addition of electrons, protons, and energy to make a
carbohydrate
Reduction
Phase of Calvin Cycle:
Reorganization & rearrangement of
remaining products
to regenerate the
initial reactant
Regeneration of CO2 acceptor
Phase of Calvin Cycle:
RuBP + CO2 —> 2 3-Phosphoglycerate (3PG)
Carbon Fixation
Phase of Calvin Cycle:
-Consumes 6 ATPs & 6 NADPHs
-Phosphorylate and
reduce the products
of carbon fixation
-Remove 1 G3P
Reduction of Carbon
Phase of Calvin Cycle:
-Convert five 3C G3P into 5C RuBP
-Consume 3 ATPs
Regeneration of the CO2 acceptor
