BMSC 230 METABOLISM MODULES 9-13 QUESTIONS
AND ANSWERS
Which statement about the regulation of fatty acid synthesis is CORRECT?
A) Acetyl CoA carboxylase is the key enzyme in the pathway that is regulated.
B) Fatty acid synthesis is stimulated by a low energy state so that more fatty acids are made
that can be used as fuel.
C) Epinephrine stimulates fatty acid synthesis to provide fuel for the "fight or flight" reflex.
D) Acetyl CoA carboxylase is phosphoryated by cAMP-dependent protein kinase and inhibited
allosterically by citrate. Correct Ans-A) Acetyl CoA carboxylase is the key enzyme in the
pathway that is regulated.
Which of the following is NOT a required ingredient for the synthesis of palmitate?
A) ATP
B) FADH2
C) NADPH
D) Acetyl CoA Correct Ans-B) FADH2
What do triacylglycerol and phospholipids have in common?
A) a, b, and c are all correct.
B) Both b and c are correct.
C) They both contain a phosphate group.
D) They both have three fatty acids linked to a glycerol backbone.
E) They both have a glycerol backbone. Correct Ans-E) They both have a glycerol backbone.
, BMSC 230 METABOLISM MODULES 9-13 QUESTIONS
AND ANSWERS
Which of the statements about phosphatidylcholine is incorrect?
A) It can be synthesized from phosphatidylserine by multiple methylations.
B) There are multiple pathways for its synthesis in the event of inadequate dietary supply.
C) It is the most abundant phospholipid in membranes.
D) It can be synthesized using free choline. Correct Ans-A) It can be synthesized from
phosphatidylserine by multiple methylations.
What precursor molecule provides all 27 carbons of cholesterol? Correct Ans-Acetyl CoA
Which of the following statements about statins is false?
A) Statins inhibit HDL particle production in liver.
B) Statins act as competitive inhibitors.
C) Statins inhibit HMG-CoA reductase activity.
D) Statins are prescribed to patients to lower blood cholesterol levels. Correct Ans-A)
Statins inhibit HDL particle production in liver.
What do phospholipids and triacylglycerol have in common?
A) They both have a phosphate group as part of their structure.
B) They both have a glycerol backbone.
C) They both act as storage forms of energy.
AND ANSWERS
Which statement about the regulation of fatty acid synthesis is CORRECT?
A) Acetyl CoA carboxylase is the key enzyme in the pathway that is regulated.
B) Fatty acid synthesis is stimulated by a low energy state so that more fatty acids are made
that can be used as fuel.
C) Epinephrine stimulates fatty acid synthesis to provide fuel for the "fight or flight" reflex.
D) Acetyl CoA carboxylase is phosphoryated by cAMP-dependent protein kinase and inhibited
allosterically by citrate. Correct Ans-A) Acetyl CoA carboxylase is the key enzyme in the
pathway that is regulated.
Which of the following is NOT a required ingredient for the synthesis of palmitate?
A) ATP
B) FADH2
C) NADPH
D) Acetyl CoA Correct Ans-B) FADH2
What do triacylglycerol and phospholipids have in common?
A) a, b, and c are all correct.
B) Both b and c are correct.
C) They both contain a phosphate group.
D) They both have three fatty acids linked to a glycerol backbone.
E) They both have a glycerol backbone. Correct Ans-E) They both have a glycerol backbone.
, BMSC 230 METABOLISM MODULES 9-13 QUESTIONS
AND ANSWERS
Which of the statements about phosphatidylcholine is incorrect?
A) It can be synthesized from phosphatidylserine by multiple methylations.
B) There are multiple pathways for its synthesis in the event of inadequate dietary supply.
C) It is the most abundant phospholipid in membranes.
D) It can be synthesized using free choline. Correct Ans-A) It can be synthesized from
phosphatidylserine by multiple methylations.
What precursor molecule provides all 27 carbons of cholesterol? Correct Ans-Acetyl CoA
Which of the following statements about statins is false?
A) Statins inhibit HDL particle production in liver.
B) Statins act as competitive inhibitors.
C) Statins inhibit HMG-CoA reductase activity.
D) Statins are prescribed to patients to lower blood cholesterol levels. Correct Ans-A)
Statins inhibit HDL particle production in liver.
What do phospholipids and triacylglycerol have in common?
A) They both have a phosphate group as part of their structure.
B) They both have a glycerol backbone.
C) They both act as storage forms of energy.
