Question

The process of transfer of an amino group from one amino acid to the keto group of a keto acid is called as ________.
A. Oxidative amination
B. Reductive amination
C. Transamination
D. Deamination

Answer 1

Hint: Transaminase, a category of transferases enzyme, catalyses this process. This enzyme is also known as aminotransferase as it is involved in the transfer of the amino group.

Complete answer:
Reductive amination is a chemical process in which conversion of a carbonyl group to amine group takes place. The intermediate for this reaction is an imine. The carbonyl group refers to any aldehyde or ketone group.
Transamination is a chemical process in which transfer of an amino group from one amino acid takes place and that amino group is transferred to the keto group of a keto acid.

Deamination, a chemical reaction, in which there is a removal of an amine group from an amino acid, takes place.
oxidative deamination is a chemical process in which formation of alpha-keto acids take place from amine containing compounds.
Amine group is the -NH$_2$ group of an amino acid and keto group is the C=O of the carboxyl group of an amino acid.

So, here the correct answer is option C. Transamination.

Note: One amino group from one amino acid and one carboxyl group from the previous amino acids react to make a peptide bond and as a result water is released. The peptide bond is also called keto-amine bond.