Q1. Differentiate between cellular respiration and breathing.

Ans. Cellular respiration is the process in which the C-H bonds in food are broken by oxidation reduction reactions and the energy is transformed into ATP. While the term breathing is used for the process through which animals take air in their bodies to get oxygen from it arid then give out the air for getting rid of carbon dioxide. Thus breathing and respiration are not synonymous

Q. In which form Organisms need energy?

A. Organisms need energy in the form of ATP.

Q. Differentiate between respiration and breathing.

A. Breathing

The term breathing is used for the process through which animals take air in their bodies to get oxygen from it and then give out the air for getting rid of carbon dioxide. Thus breathing and respiration are not synonymous.

Respiration involves the mechanical and the bio-chemical process whereas breathing is only the mechanical or physical process of exchange of gases.

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