Question

what is the function of cofactor nad+? a) it acts as a proton transporter b) it acts as an electron transporter or electron acceptor c) it transfers a chemical group from ethanol to adh d) it transfers zn²⁺ to adh

Explanation:

NAD+ acts as an electron - acceptor in redox reactions. During the oxidation of ethanol by alcohol dehydrogenase (ADH), NAD+ accepts electrons and a proton to form NADH. It is not a proton - only transporter, does not transfer chemical groups from ethanol to ADH in that way, and does not transfer Zn²⁺ to ADH.

Answer:

b) It acts as an electron transporter or electron acceptor