If niacin is not available for the coenzyme nicotinamide adenine dinucleotide (NAD),which of the following would occur to the reaction that requires NAD? Check all that apply.
A)The enzymatic reaction cannot proceed
B)NAD would use another B vitamin
C)The enzymatic reaction will still be able to proceed at a regular rate
D)It is not possible to predict what will happen

Question

If niacin is not available for the coenzyme nicotinamide adenine dinucleotide (NAD),which of the following would occur to the reaction that requires NAD?  Check all that apply.
A)The enzymatic reaction cannot proceed
B)NAD would use another B vitamin
C)The enzymatic reaction will still be able to proceed at a regular rate
D)It is not possible to predict what will happen

Quizplus · Accepted Answer

Niacin is required for the synthesis of NAD, and if it is not available, NAD cannot be produced. Therefore, the enzymatic reaction that requires NAD will not be able to proceed. B is not a valid choice because NAD cannot use other B vitamins, and C and D are not valid because the question states that niacin is not available for NAD synthesis.

If Niacin Is Not Available for the Coenzyme Nicotinamide Adenine