Course

Biochemistry

Study Pack

Set 24 Lipid Biosynthesis

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Question 1

(Multiple Choice)

Free
Phosphorylation of regulatory sites on acetyl-CoA carboxylase ____ the affinity for citrate and ____ the affinity for fatty acyl-CoAs requiring ____ levels of fatty acyl-CoAs for inhibition.

A) increases; decreases; low
B) decreases; increases; high
C) decreases; increases; low
D) increases; decreases; high
E) none are correct

Answer

Question 2

(Multiple Choice)

Free
Acetyl-CoA carboxylase in animals is regulated by all of the following EXCEPT:

A) allosterically stimulated by citrate.
B) phosphorylation by protein kinase A.
C) allosterically inhibited by palmitoyl-CoA.
D) allosterically stimulated by ATP.
E) all are correct.

Answer

Question 3

(Multiple Choice)

Free
In fatty acid synthase, the correct sequence of enzyme catalyzed reactions are:
A.β-ketoacyl-ACP synthase
B.β-ketoacyl reductase
C.β-hydroxyacyl dehydratase
D.enoyl reductase
E.acetyl transferase

A) A, B, C, D, E
B) C, B, D, E, A
C) B, A, C, D, E
D) A, C, B, E, D
E) D, E, A, B, C

Answer