Question

What is the function of oxygen in cells and burning of fuels?

• A. Oxygen is used to derive energy.
• B. Oxygen is used to burn (break) energy rich chemicals.
• C. Oxygen is needed to transport usable energy.
• D. Oxygen is needed to store energy.

Answer 1

The correct option is B

Oxygen is used to burn (break) energy rich chemicals.

Oxygen is used by the cells and also in the process of combustion. In cells, oxygen is used in the process of cellular respiration to break down food molecules such as carbohydrates to release carbon dioxide and water. The burning of fuels breaks down energy-rich chemicals in fuel with the release of carbon dioxide and water also.