Question

where is oxygen used in respiration

Answer 1

Answer:

Mitochondria

Oxygen is a critical component of Aerobic respiration in many animals. The reason why oxygen is so important is because it plays a crucial role in the mitochondria, the powerhouses of the cell. The mitochondria has two membranes. On the inner membrane, 4 groups of protein form the Electron Transport Chain.

Answer 2

oxygen is absorbed by the alveoli in the lungs from the inhaled air and then it moves to the heart and then it pumped by heart and circulated in whole body on riding on RBCs