Photosynthesis Quiz

What is the primary acceptor of electrons in Photosystem I?

• P700+

• Fd

• NADP+

• Rubisco

What is the main output of the Calvin Cycle?

• G3P

• NADPH

• ATP

• O2

What is the purpose of the Calvin Cycle in photosynthesis?

• Convert solar energy to chemical energy

• Produce oxygen as a by-product

• Reduce CO2 to sugar

• Regenerate RuBP

Which plants have spatial separation of steps in carbon fixation?

• CAM Plants

• C3 Plants

• C4 Plants

• Maize

What is the effect of photorespiration on plant growth?

• Increases growth

• No effect on growth

• Decreases growth

• Stimulates flowering

What is the purpose of NADP+ reductase in the light reactions?

• Reduces NADP+ to NADPH

• Fixes CO2 into G3P

• Converts solar energy to chemical energy

• Regenerates RuBP

What is the final product of the light reactions in photosynthesis?

• NADPH

• ATP

• O2

• G3P

What is the role of rubisco in the Calvin Cycle?

• Reduces CO2 to sugar

• Binds to O2 or CO2

• Converts solar energy to chemical energy

• Regenerates RuBP

Which plants open stomata at night and close during the day?

• C4 Plants

• C3 Plants

• Sugarcane

• CAM Plants

What is the main function of cyclic and non-cyclic photophosphorylation?

• Regenerate RuBP

• Reduce CO2 to sugar

• Produce oxygen as a by-product

• Convert solar energy to chemical energy