AP Biology Photosynthesis 3

Front

What is the primary enzyme responsible for carbon fixation in the Calvin cycle during photorespiration?

Back

Rubisco (Ribulose bisphosphate carboxylase/oxygenase) is the primary enzyme responsible for carbon fixation in the Calvin cycle.

Front

What ion travels alongside electrons in the electron transport chain during photosynthesis?

Back

Hydrogen ions (H+) travel alongside electrons in the electron transport chain.

Front

What is the direct by-product of splitting water molecules during photosynthesis?

Back

Oxygen is the direct by-product of splitting water molecules (photolysis) during photosynthesis.

Front

What process generates ATP using a proton pump and ATP synthase?

Back

Chemiosmosis is the process that generates ATP using a proton pump and the enzyme ATP synthase.

Front

Which product is NOT formed during cyclic electron flow in photosynthesis?

Back

NADPH is not formed during cyclic electron flow.

Front

What is the role of chlorophyll in photosynthesis?

Back

Chlorophyll absorbs light energy, primarily in the blue and red wavelengths, and converts it into chemical energy.

Front

What are the two main stages of photosynthesis?

Back

The two main stages of photosynthesis are the light-dependent reactions and the light-independent reactions (Calvin cycle).

Front

What is photolysis and its significance in photosynthesis?

Back

Photolysis is the process of splitting water molecules using light energy, which produces oxygen and provides electrons for the electron transport chain.

Front

What is the function of ATP synthase in photosynthesis?

Back

ATP synthase synthesizes ATP from ADP and inorganic phosphate using the energy from the proton gradient created by the electron transport chain.

Front

How does cyclic electron flow differ from non-cyclic electron flow?

Back

Cyclic electron flow involves only photosystem I and produces ATP without generating NADPH or oxygen, while non-cyclic electron flow involves both photosystems and produces both ATP and NADPH.