Which of these statements describes nicotinamide adenine dinucleotide (NAD)
A)It converts ADP + Pi to ATP.
B)It is found in the cytosol.
C)It is a hydrogen carrier molecule.
D)It is a hydrogen carrier molecule found in the cytosol.

Question

Quizplus · Accepted Answer

Nicotinamide adenine dinucleotide (NAD) is a coenzyme that acts as a hydrogen carrier molecule in many redox reactions in a cell. It can accept electrons (and hydrogen ions) to become NADH, and then donate them to other molecules in different metabolic pathways. NAD is found in both the cytoplasm and mitochondria of eukaryotic cells. It does not participate in ATP synthesis directly, so option A is incorrect. Option B is incorrect because NAD is found in both the cytoplasm and mitochondria, and is not restricted to only the cytosol.

Which of These Statements Describes Nicotinamide Adenine Dinucleotide (NAD)