Chapter
25
Practice quiz
1. T F NADH2 is the oxidized form of NAD.
2. T F Sustrate-level phosphorylation generates ATP from an intermediary molecule.
3. T F Glycolysis produces two net NADH2 molecules in the absence of oxygen.
4. T F Both the Krebs and Electron Transport systems require NADH to function.
5. T F The first steps of glycolysis requires two ATP to be oxidized.
6. T F Two molecules of pyruvic acid are manufactured form each glucose molecule.
7. T F The Krebs cycle starts and ends with a four carbon molecule known as oxaloacetic acid.
8. T F Both the Krebs and Electron Transport systems occur in the matrix of the mitochondria.
9. T F The ATP synthetase is embedded in the outer membrane of the mitochondria.
10. T F Glycogen is a polymer of glucose and phosphate.
11. The number of ATP molecules
formed from the Krebs cycle is:
a. 0
b. 2
c. 4
d. 18
e. 36 or 38
12. Glycogenolysis requires
the enzyme:
a. phosphatase
b. glycogenase
c. glucogenase
d. hexokinase
e. none of the above
13. Gluconeogensis forms
glucose from:
a. carbohydrates
b. lipids
c. proteins
d. both a and b
e. both b and c
14. The number of essential
fatty acids are:
a. 2
b. 4
c. 6
d. 8
e. there are no essential fatty acids
15. Which of the following
are considered ketone bodies.
a. acetoacetic acid
b. beta-hydroxybutyric acid
c. acetone
d. all of the above
e. none of the above
16. Amino acids can enter
the metabolic pathway to be oxidized in ATP formation at what step(s).
a. glycolysis
b. Krebs
c. Electron transport
d. Both a and b
e. Both b and c
17. The principle function
of the post-absorptive state is to:
a. store glucose
b. maintain blood glucose
c. manufacture lipids
d. manufacture proteins
e. none of the above
18. The principle hormone(s)
in the absorptive state is (are):
a. insulin
b. glucagon
c. GIP
d. thyroxin
e. epinephrine
19. The transfer of heat
through the movement of fluids is called:
a. conduction
b. convection
c. radiation
d. evaporation
e. none of the above
match the vitamin to its characteristic
20.___inactivate free radicals
a.B1
21.___UV needed to activate b.
K
22.___inhibits fatty acid catabolism c.
E
23.___prothrombin d.
D
24.___acetylcholine e.
A