AP Biology Unit 3 Oxidative Phosphorylation

Front

Where does oxidative phosphorylation take place?

Back

Mitochondrial cristae.

Front

How many ATPs are synthesized from 1 NADH and 1 FADH2 on average?

Back

1 NADH = 3 ATP; 1 FADH2 = 2 ATP.

Front

What are the two parts of oxidative phosphorylation?

Back

Electron transport chain & Chemiosmosis.

Front

What is the function of decoupling oxidative phosphorylation in the electron transport chain?

Back

Generate heat to regulate body temperature in endotherms.

Front

How does the electron transport chain facilitate the synthesis of ATP?

Back

The ATP is synthesized by the protons flowing down their concentration gradient after being pumped out by the ETC.

Front

What is oxidative phosphorylation?

Back

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

Front

What role do NADH and FADH2 play in oxidative phosphorylation?

Back

They act as electron carriers that donate electrons to the electron transport chain.

Front

What is the role of oxygen in oxidative phosphorylation?

Back

Oxygen acts as the final electron acceptor in the electron transport chain.

Front

What is chemiosmosis?

Back

The movement of protons across a membrane, driving the synthesis of ATP via ATP synthase.

Front

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

Back

It provides the energy needed for ATP synthesis as protons flow back into the mitochondrial matrix.