Nitrate reductase enzyme is responsible for the formation of

Which one of the following enzymes contains $Mo$ as a prosthetic group?

The processes of nitrification and nitrate assimilation are:

The following reaction represents:
$\alpha$-ketoglutaric acid $+ NH_{4}^{+} + NADPH \xrightarrow{\text{Glutamate dehydrogenase}} \text{Glutamate} + H_{2}O + NADP$

The first enzyme that reduces nitrates into nitrites in plants is

What does the given reaction show?
Choose the correct option.