BIOCHEM MODULE 8 EXAM END OF COURSE STUDY GUIDE LATEST UPDATED ACTUAL TESTED

BIOCHEM MODULE 8 EXAM END OF
COURSE STUDY GUIDE LATEST UPDATED
ACTUAL TESTED QUESTIONS AND
CORRECT ANSWERS

⩥ After three cycles of beta-oxidation, the oleoyl-CoA (18:1, Δ9) would
be shortened by:
a.
six acetyl-CoA
b.
six carbon atoms
c.
12 carbon atoms
d.
three carbons.
Answer: b.
six carbon atoms


⩥ Arrange the following enzymes participating in β-oxidation of fatty
acids in CORRECT ORDER:
1. β-Hydroxyacyl-CoA dehydrogenase,
2. Thiolase,

,3. Enoyl-CoA hydratase,
4. Acyl-CoA dehydrogenase
a.
1, 2, 3, 4
b.
4, 3, 1, 2
c.
4, 2, 3, 1
d.
3, 1, 4, 2.
Answer: b.
4, 3, 1, 2


⩥ Carnitine is required to reduce NAD+ to NADH:
a.
FALSE
b.
TRUE.
Answer: a.
FALSE


⩥ Carnitine is:

,a.
a 15-carbon fatty acid.
b.
essential for intracellular transport of fatty acids.
c.
an essential cofactor for the citric acid cycle.
d.
one of the amino acids commonly found in protein..
Answer: b.
essential for intracellular transport of fatty acids.


⩥ Complete β-oxidation of 1 mole of which fatty acid would generate
the most ATP?
a.
Butyric acid
b.
Palmitic acid
c.
Propionic acid
d.
Stearic acid.
Answer: d.

, Stearic acid


⩥ Fatty acids are converted to their coenzyme A esters in a reaction
catalyzed by:
a.
acetyl transferase
b.
acyl-CoA synthetase
c.
acetyl-CoA carboxylase
d.
ketoacyl synthase.
Answer: b.
acyl-CoA synthetase


⩥ For each acetyl-CoA that is incorporated into a growing fatty acid,
what energy inputs are required, assuming that the growing fatty acid
already contains at least 4 carbons?
a.
1 NADPH, 1 FADH2, 1 ATP
b.
1 NADPH, 1 FADH2, 2 ATP
c.