Question

multiple choice question
nadh is a small organic molecule that is needed for an enzyme to work properly. nadh is a(n) ________.
amino acid
peptide
coenzyme
enzyme

Explanation:

NADH is a non - protein organic molecule that helps enzymes function, which is the definition of a coenzyme. Amino acids are building blocks of proteins, peptides are short chains of amino acids, and an enzyme is a protein (or RNA in some cases) that catalyzes a biochemical reaction.

Answer:

C. coenzyme