Assertion: Reductive amination involves the transfer of amino group from one amino acid to the keto group of a keto acid.
Reason: In reductive amination, transfer of $N{H}_2$ from glutamic acid takes place.

Answer: DSolution: In reductive amination in the presence of enzyme glutamate dehydrogenase and a reduced coenzyme (NADH or NADPH), ammonia can directely combine with $\alpha$-ketoglutaric acid to from a an amino acid. On the other hand, transamination is transfer of amino group $\left(-N{H}_2\right)$ of one amino acid with the keto group (gt C=O) of keto acid. in transaminase, transfer of $N{H}_2$ from glutamic acid takes place. The enzyme required is transaminase or aminostransferase.