Exam 24: The Organic Mechanisms of the Coenzymes

Which of the following coenzymes is required for the enzyme catalyzed reaction shown below? Xylose-5-P + Ribose-5-P Glyceraldehyde-3-P + Sedoheptulose-7-P

Which of the following vitamins is the only water-soluble vitamin that does not function as a coenzyme?

All redox chemistry of the pyridine nucleotide coenzymes takes place at the _____-position of the pyridine ring.

Through what enzymatic pathway is thymine biosynthesized?

Which of the following is not true about catabolic reactions?

Which of the following vitamins is involved in the catalysis of an acyl transfer reaction?

Which of the following statements regarding glycolysis is correct?

Which of the following best represents the chemical reaction catalyzed by B₁₂-dependent enzymes?

Which of the following statements is not true about the coenzyme tetrahydrofolate (THF)?

Give the purpose of coenzyme B₁₂ in rearrangement reactions.

What are holoenzymes and apoenzymes?

What metal ion is also required by biotin-dependent enzymes?

Propose a mechanism for the following coenzyme B₁₂-dependent enzyme-catalyzed reaction.

Which type of vitamins, water-soluble or lipid-soluble, can cause overdose?

Pantothenic acid is used to form the coenzyme(s)________.

Which of the following reactions does the coenzyme biotin catalyze?

Which of the following vitamins can be synthesized by all mammals except humans and guinea pigs?

Which of the following statements is not true about vitamin K?

Identify the true statement(s).

Can an NAD⁺/NADH dependent enzyme tell the difference between the pro-R hydrogen and pro-S hydrogen of a substrate? Explain.