True statements about de novo fatty acid synthesis include
A) It utilizes acetyl CoA from carbohydrates and occurs in the liver and adipocyte inner mitochondrial matrix.
B) The rate limiting step involves a reaction in which acetyl CoA accepts a one carbon group from another acetyl CoA to form malonyl CoA.
C) Acetyl CoA carboxylase is active only in its multimeric form which contains biotin in a N-carboxybiotin-enzyme complex.
D) Fatty acid synthase is a complex enzyme in humans which is active as a homodimer. Each round of synthesis adds two carbons from malonyl-CoA to the methyl end of the fatty acid chain. The final product contains the original two carbons
E) The acyl carrier protein (ACP) in the fatty acid synthase enzyme contains a biotin moiety esterified to a hydroxyl group of serine to provide the sulfhydryl group onto which the growing fatty acid chain is always attached.
Correct Answer:
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Q1: The beta-oxidation of fatty acids
A) occurs in
Q2: During the biosynthesis of saturated fatty acids,
Q3: Complete hydrogenation of linoleate produces
A) stearate.
B) palmitate.
C)
Q4: The fatty acid synthase complex contains all
Q5: Which of the following compounds will generate,
Q7: The theoretical P/O ratio for the oxidation
Q8: All of the following are directly involved
Q9: A condition which favors increased ketone body
Q10: The reductive steps in fatty acids synthesis
Q11: In contrast to fatty acids, which of
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