AP Biology: Unit 3 Review (CED)

Front

What is the difference between competitive and noncompetitive inhibitors?

Back

Competitive inhibitors bind to the active site of an enzyme, while noncompetitive inhibitors bind to a different site.

Front

How does doubling the amount of enzyme affect free energy?

Back

Doubling the amount of enzyme has no effect on free energy.

Front

Where is the electrochemical gradient of protons generated in the electron transport chain?

Back

The electrochemical gradient of protons is generated in the intermembrane space.

Front

What are the electron carriers in the electron transport chain of cellular respiration?

Back

The electron carriers are NADH and FADH2.

Front

Where does the substrate bind on an enzyme?

Back

The substrate binds at the active site.

Front

Define an enzyme.

Back

An enzyme is a biological catalyst that speeds up chemical reactions by lowering the activation energy.

Front

What is the role of NADH in cellular respiration?

Back

NADH acts as an electron carrier, transferring electrons to the electron transport chain.

Front

What is the function of the active site of an enzyme?

Back

The active site is the region where substrates bind and undergo a chemical reaction.

Front

Explain the concept of allosteric regulation.

Back

Allosteric regulation involves the binding of a molecule at a site other than the active site, which alters enzyme activity.

Front

What is the significance of the proton gradient in cellular respiration?

Back

The proton gradient is used to produce ATP through chemiosmosis during oxidative phosphorylation.