Which of the Following Cofactors is Used During the Activation

Question

Which of the following cofactors is used during the activation and transfer of carbon dioxide?
A)nicotinamide adenine dinucleotide (NAD)
B)thiamine pyrophosphate
C)biotin
D)coenzyme A
E)tetrahydrofolate

Accepted Answer

Biotin is a cofactor used during the activation and transfer of carbon dioxide. It is involved in carboxylation reactions, such as those that occur during the fixation of carbon dioxide in photosynthesis and the production of fatty acids. Nicotinamide adenine dinucleotide (NAD), thiamine pyrophosphate, coenzyme A, and tetrahydrofolate are cofactors used in other metabolic pathways.