Question

41. Distinguish between Respiration and combustion.

Answer 1

Respiration: Respiration is a metabolic process that occurs in all organisms. It is a biochemical process that occurs within the cells of organisms. In this process, the energy (ATP-Adenosine triphosphate) is produced by the breakdown of glucose which is further used by cells to perform various functions.

Combustion: Combustion refers to the process where a substance burns in the presence of Oxygen, giving off heat and light in the process.

S. no.	Respiration	Combustion
1.	It takes place in living cells only.	It does not takes place in the living cells.
2.	Food material is oxidized stepwise and stepwise release of energy occurs.	The substrate is oxidized at random and energy is released from the spontaneous breakdown of foodstuff.
3.	Most energy released during respiration is stored in the form of ATP.	The energy released in combustion is lost in the form of light and heat.
4.	It takes place at ordinary temperature.	It takes place at a much higher temperature.
5.	It is a continuous process.	It is not a continuous process.