Question

What are the products of aerobic respiration?

• A. $C{O}_2,H_{2}O,\text{energy}$
• B. $C{O}_2,\text{ethanol},\text{energy}$
• C. $\text{Lactic acid},\text{energy}$
• D. None of these

Answer 1

The correct option is A $C{O}_2,H_{2}O,\text{energy}$

The breaking down of the respiratory substrates in the presence of oxygen to liberate energy is called aerobic respiration. The given equation represents aerobic respiration.

$\stackrel{\text{glucose}}{C_6{H}_{12}{O}_6}+\stackrel{\text{oxygen}}{6O_2}\to \stackrel{\text{carbon dioxide}}{6C{O}_2}+\stackrel{\text{water}}{6H_{2}O}+\stackrel{\text{energy}}{\text{ATP}}$

In aerobic respiration, glucose undergoes complete oxidation in the presence of $O_2$ and liberates $C{O}_2,H_{2}O$ and energy.

Fermentation is the chemical breakdown of substances in the absence of $O_2$ to liberate energy. Based on the product formed, fermentation can be of two types - ethyl alcohol fermentation and lactic acid fermentation.

$C{O}_2$, ethanol and energy are the products of ethyl alcohol fermentation. Whereas lactic acid and energy are the products of lactic acid fermentation.