21. The Generation of Biochemical Energy

What atom in the cytochromes undergoes oxidation and reduction in the electron-transport chain? What atoms in coenzyme Q undergo oxidation and reduction in the electron-transport chain?

FADH₂ can be oxidized at both complex I and II in the inner membrane of mitochondria. (T/F)

Write a reaction representing oxidation of NADH coenzyme.

Protons are pumped into the intermembrane space due to:

The mobile electron carriers of the ETC are:

What two coenzymes are involved with initial events of the electron-transport chain?

What happens to the energy level as electrons are passed along in electron transport?

How is NADH oxidized in electron transport?

In the chemiosmotic model, how is energy provided to synthesize ATP?

Name the electron carrier that transports electrons from complex I to complex III.

Name the complex where FADH₂ enters electron transport.

Identify the following as the reduced or oxidized form:

a. NAD⁺

Identify the following as the reduced or oxidized form:

c. QH₂

Identify the following as the reduced or oxidized form:

c. Q

What is the effect of proton accumulation in the intermembrane space?