AP Biology: Unit 3 Review (CED)

Front

What is oxidation?

Back

Loss of electrons.

Front

Where on an enzyme does the substrate bind?

Back

Active site.

Front

Describe the pathway of electrons in the light reactions.

Back

H₂O → PSII → ETC → PSI → NADPH.

Front

What is the effect on the free energy of doubling the amount of enzyme?

Back

No effect on free energy.

Front

Why does an increase in temperature increase the rate of the reaction?

Back

Increase in temperature increases the speed/kinetic energy of particles.

Front

What is reduction in a chemical reaction?

Back

Gain of electrons.

Front

What is the role of enzymes in biological reactions?

Back

Enzymes act as catalysts to speed up reactions without being consumed.

Front

What is the active site of an enzyme?

Back

The region on the enzyme where the substrate binds.

Front

What is the difference between competitive and non-competitive inhibition?

Back

Competitive inhibition occurs when an inhibitor competes with the substrate for the active site; non-competitive inhibition occurs when an inhibitor binds to a different site, changing the enzyme's shape.

Front

What is the function of NADPH in photosynthesis?

Back

NADPH is used as a reducing agent in the Calvin cycle.