Exam 3 practice exam questions

Question 1

Compounds known as ______ prevent the phosphorylation of ADP by affecting electron transport along the electron transport chain

Answer 1

Respiratory inhibitors

Question 2

How many molecules of ADP are phosphorylated from the energy generated by electrons donated by 2 molecules of FADH2

Answer 2

3

Question 3

Thermogenin is produced in newborn animals and generates heat by what process

Answer 3

uncoupling ATP synthesis from the electron transport chain

Question 4

A novel lethal gas is discovered by Dr. Evil that can directly compete with oxygen in the electron transport chain. Based on your understanding of the electron transport chain, where would you expect this lethal gas to bind

Answer 4

complex IV

Question 5

Which one of the following is not true of the process of oxidative phosphorylation?
a. protons flow into the mitochondrial matrix through the ATP-synthase
b. F0 part of the ATP synthase serves as a proton channel
c. F1 part of the ATP synthase serves as the sire of ATP formation
d. electrons are transported to ATP synthase from the respiratory complexes
e. potential energy in the form of a proton gradient is converted into chemical energy in the form of ATP

Answer 5

D. electrons are transported to ATP synthase from the respiratory complexes

Question 6

Photosynthesis occurs in

Answer 6

the chloroplast

Question 7

In the overall reactions of photosystems I and II, _____ is the electron donor and _____ is the ultimate electron acceptor

Answer 7

H2O
NADP+

Question 8

During the light reactions of photosynthesis, light provides energy for

Answer 8

formation of a proton gradient and ATP synthase