Provide the full names for the following chemical species:
$(1)$ $N_2$
$(2)$ $NH_4^+$

The transported and storage forms of nitrogen in plants are:

Which of the following is released by organisms when plant biomass is decomposed by bacteria?

$A-$ Asparagine and glutamine are two most important amides.
$R-$ Asparagine and glutamine are formed from two amino acids,namely aspartic acid and glutamic acid respectively,by addition of another $NH_2$ group to each.

$A$: Soybean exports the fixed nitrogen as ureides.
$R$: Amides contain excess nitrogen and they are transported via phloem sieve tubes.

Complete the following equation:
$\alpha$-ketoglutaric acid $+ NH_4^+ + NADPH \xrightarrow{\text{Glutamate Dehydrogenase}} ?$