For the existence of nitrogen in its stable molecular form,how many nitrogen atoms are required?

In which of the following processes are $36 \,ATP$ molecules produced per hexose molecule?

Select the correct option:
$(1)$ Fermentation / Aerobic respiration does not have an electron transport system.
$(2)$ Combustion / Respiration is a biochemical process.

How many molecules of $CO_2$ are released during the complete oxidation of one molecule of pyruvic acid?

Match the following columns:

Column-$I$	Column-$II$
$(A)$ $RQ$ of fats	$(I)$ Less than $7$ percent
$(B)$ Energy released in fermentation	$(II)$ Less than $1$
$(C)$ $RQ$ of glucose	$(III)$ $1$
$(D)$ Net $\text{ATP}$ produced in fermentation	$(IV)$ $2$

In respiration,the energy is produced during the process of