Which One of the Following is NOT a Component of an Amino

Question

Which one of the following is NOT a component of an amino acid?
A)$\alpha$ carbon
B)amino group
C)triphosphate group
D)R group
E)carboxyl group

Accepted Answer

Amino acids consist of an amino group, a carboxyl group, a hydrogen atom, and an R group, all bonded to a central alpha carbon. Triphosphate groups are not part of amino acids, but rather they are found in molecules such as ATP (adenosine triphosphate) which is used for energy storage in cells.