AP Biology Unit 3 Oxidative Phosphorylation

Front

What is oxidative phosphorylation?

Back

A metabolic pathway that uses energy released by the electron transport chain to power ATP synthesis.

Front

What are the two main components of oxidative phosphorylation?

Back

Electron transport chain and chemiosmosis.

Front

Where does oxidative phosphorylation occur in the cell?

Back

In the mitochondrial cristae.

Front

What role do NADH and FADH2 play in oxidative phosphorylation?

Back

They donate electrons to the electron transport chain, facilitating ATP production.

Front

How many ATP molecules are produced from one NADH molecule?

Back

On average, 3 ATP molecules.

Front

How many ATP molecules are produced from one FADH2 molecule?

Back

On average, 2 ATP molecules.

Front

What is the function of the electron transport chain?

Back

To transfer electrons through a series of proteins, pumping protons into the intermembrane space.

Front

What is chemiosmosis?

Back

The process by which protons flow back into the mitochondrial matrix through ATP synthase, driving ATP synthesis.

Front

What is the significance of the proton gradient in oxidative phosphorylation?

Back

It creates potential energy that is used to synthesize ATP.

Front

What happens during the process of decoupling oxidative phosphorylation?

Back

Energy is released as heat instead of being used for ATP synthesis.