Oxidative Phosphorylation

Question 1

The single biggest difference between complex II and the other ETC complexes is _______.

Answer 1

Does not pump protons, just electron transport.

Question 2

The proton gradient is the source of energy for oxidative phosphorylation of ATP. TF

Answer 2

True

Question 3

Which electron carriers are utilized in the electron transport chain (ETC)?

Answer 3

NADH+ and FADH2

Question 4

Which of the following ETC complexes does not interact with any diffusible electron carrier?

Answer 4

Complex I, III, and IV. All except II

Question 5

Which protein was important in providing evidence for the evolutionary tree of life being a reality?

Answer 5

Cytochrome C

Question 6

Which compounds have transporters in the inner mitochondrial membrane?

Answer 6

Hydrogen

Question 7

What do oxidative phosphorylation, the light reactions of photosynthesis, and the mitochondrial electron transport chain all have in common?

Answer 7

All use electron transport chain to produce energy.

Question 8

Complex I takes its electrons from _____ and gives them to ______.

Answer 8

NADH, quinone.

Question 9

What is the role of complex IV in the electron transport chain?

Answer 9

Electrons from cytochrome C

Question 10

The F1F0 ATP synthase can be described as: _______.

Answer 10

Rotary motor. Turbine. Mechanical rotational.

Question 11

Energy from the proton gradient can be used in a number of different ways. TF

Answer 11

True.

Question 12

Provide an example of a gradient-driven rotary motor.

Answer 12

F1F0 ATP synthase

Question 13

What is the different between complex I and complex II of the ETC?

Answer 13

Complex II does not pump protons.

Question 14

What is an uncoupling protein?

Answer 14

A protein that produces heat instead of ATP. Move proton into mitochondria so fast that they produce heat.

Question 15

Electron flow down the electron transport chain leads to the:

Answer 15

Transport of protons across the inner mitochondrial membrane from insde the matrix to the intermembrane space.

Question 16

What is the same about complex I and II

Answer 16

Get electrons from nucleotide carrier.
Gives electrons to coenzyme Q
Involve iron-sulfur cluster
Integral membrane complex.

Question 17

Glyceraldehyde-3-phosphate and dihydroxyacetone phosphate are:

Answer 17

Interconvertible

Question 18

All of the following are intermediates of glycolysis except

Answer 18

Gycerol-3-phosphate

Question 19

Which of the following compounds is an allosteric regulator of both a kinase and phophorylase?

Answer 19

Fructose-2,6-biphosphate

Question 20

Electron flow down the electron-transport chain leads to the:

Answer 20

Transport of protons across the inner mitochondrial membrane from inside the matrix to the intermembrane space.