AP Biology Unit 3 Review

Front

What are the main electron carriers in the electron transport chain during cellular respiration?

Back

NADH and FADH2 are the main electron carriers in the electron transport chain.

Front

What is the consequence of a non-functioning proton (H+) pump in the thylakoid during the light reaction?

Back

If the proton pump is not working, ATP cannot be produced during the light reaction.

Front

How does increasing the amount of enzyme affect the rate of a biochemical reaction?

Back

Increasing the amount of enzyme increases the rate of the reaction.

Front

What reactants do plants use in the light reaction of photosynthesis?

Back

Plants use water, NADP+, and ADP as reactants in the light reaction.

Front

What does it mean to phosphorylate ADP?

Back

Phosphorylating ADP means adding a phosphate group to ADP to form ATP, increasing the free energy of the molecule.

Front

What is the role of NADPH in photosynthesis?

Back

NADPH acts as an electron carrier and is used in the Calvin cycle to reduce carbon compounds.

Front

What is the function of ATP in cellular processes?

Back

ATP serves as the primary energy currency of the cell, providing energy for various biochemical reactions.

Front

What is the significance of the proton gradient in the electron transport chain?

Back

The proton gradient created by the electron transport chain is used to drive ATP synthesis through chemiosmosis.

Front

What are the products of the light reactions of photosynthesis?

Back

The light reactions produce ATP, NADPH, and oxygen gas.

Front

How does temperature affect enzyme activity?

Back

Enzyme activity typically increases with temperature up to an optimal point, after which it may denature and decrease.