Which of the following is an amide involved in nitrogen metabolism by plants?

In reductive amination,which of the following occurs?

The conversion of $NO_{3}^{-} \rightarrow NO_{2}^{-} \rightarrow NH_{3}$ is called and is catalysed by:

The processes of nitrification and nitrate assimilation are:

Identify the chemical reaction and the enzyme involved in the following process:
$\alpha$-Ketoglutaric acid + $NH_4^+ + NADPH \rightarrow$ Glutamate + $H_2O + NADP$

Give differences: Reductive Amination and Transamination.