AP Biology: Photosynthesis

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy in the form of glucose, using carbon dioxide and water.

Front

What are the two main stages of photosynthesis?

Back

The two main stages of photosynthesis are the light reactions and the Calvin Cycle.

Front

Where do the light reactions of photosynthesis occur?

Back

The light reactions occur in the thylakoid membranes of chloroplasts.

Front

What is the primary function of Photosystem II?

Back

Photosystem II captures light energy to split water molecules, releasing oxygen and providing electrons for the electron transport chain.

Front

What are the products of the light reactions?

Back

The products of the light reactions are NADPH and ATP.

Front

What is the Calvin Cycle?

Back

The Calvin Cycle is the set of chemical reactions that take place in the chloroplasts during photosynthesis, where carbon dioxide is fixed and converted into glucose.

Front

What role does rubisco play in photosynthesis?

Back

Rubisco is an enzyme that catalyzes the first step of the Calvin Cycle, fixing carbon dioxide to ribulose bisphosphate (RuBP).

Front

What is regeneration in the context of the Calvin Cycle?

Back

Regeneration is the process in the Calvin Cycle where energy and sugar interact to form RuBP, allowing the cycle to continue.

Front

What is the significance of NADPH in photosynthesis?

Back

NADPH is a reducing agent that provides the electrons needed for the reduction of carbon compounds in the Calvin Cycle.

Front

How is glucose synthesized during photosynthesis?

Back

Glucose is synthesized during the Calvin Cycle when carbon dioxide is converted into glucose through a series of reactions.