Question

21.Which gas present in the air is essential for aerobic respiration?
What is the role of oxygen during respiration?
​

Answer 1

Answer:

oxygen

All aerobic creatures need oxygen for cellular respiration, which uses the oxygen to break down foods for energy and produces carbon dioxide as a waste product.

For this reason, the chemical process inside your cells that consume oxygen to produce usable energy is known as cellular respiration. ... Oxygen is the final electron acceptor of the electron transport chain in the final step of cellular respiration. Oxygen combines with electrons and hydrogen ions to produce water.

Answer 2

Explanation:

Oxygen gas is present in the air is essential for aerobic respiration.

This oxygen actually helps in oxidation of food inside body as well as it supplies energy to the cell.