AP Biology Photosynthesis

Front

What energizes electrons during photosynthesis?

Back

Electrons become energized when they are struck with light energy.

Front

What molecule cannot be produced if the proton (H+) pump in the thylakoid is not functioning?

Back

ATP cannot be made during the light reaction.

Front

What is the primary function of the Calvin cycle?

Back

The primary function of the Calvin cycle is to produce simple sugars from carbon dioxide.

Front

How do the light reactions and the Calvin cycle interact?

Back

The light reactions provide ATP and NADPH to the Calvin cycle, and the Calvin cycle returns ADP, Pi, and NADP+ to the light reactions.

Front

Where does carbon dioxide enter plants?

Back

Carbon dioxide enters plants through the stomata.

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll.

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

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 is produced during the light reactions of photosynthesis?

Back

The light reactions produce ATP, NADPH, and oxygen.

Front

What is carbon fixation?

Back

Carbon fixation is the process of converting inorganic CO2 into organic compounds during the Calvin cycle.