Question

Coenzyme among the following is

• A. Mg${}^{++}$
• B. A part of sRNA
• C. A part of tRNA
• D. FMN

Answer 1

The correct option is D FMN

Some enzymes require no chemical groups other than their amino acid residues for activity. Others require an additional chemical component called as a cofactor. The cofactor can be either one or more inorganic ions such as ferrous, divalent magnesium or divalent manganese and zinc ions or a complex organic or metallo-organic molecule called as a coenzyme, e.g., FMN or flavin mononucleotide, which transfers electrons in biochemical reactions and is derived from riboflavin or vitamin B${}_2$.

So, the correct answer is option D.