Difference between Respiration and Combustion

The upcoming discussion will update you about the differences between Respiration and Combustion.

Difference # Respiration:

1. It occurs inside living cells.

2. It is under biological control.

3. Respiration is a biochemical process.

4. Energy is released in stages as chemical bonds are broken in steps.

5. Less than 50% energy is liberated as heat.

6. Light is liberated in a very few cases.

7. Temperature is not allowed to rise.

8. Most – of the energy is trapped in ATP molecules.

9. Oxidation occurs at the end of reaction (terminal oxidation) between reduced coenzymes and oxygen.

10. A number of intermediates are formed. They are used in the synthesis of different organic compounds.

11. A number of enzymes are required, one for each step or reaction.

Difference # Combustion:

1. It is a non-cellular process.

2. Combustion is an uncontrolled process.

3. Combustion is a physicochemical process.

4. Energy is released in a single step as all chemical steps occur simultaneously.

5. Most of the energy is liberated as heat.

6. Light is produced during combustion.

7. Temperature becomes very high.

8. ATP is not formed.

9. The substrate is directly oxidized in combustion.

10. No intermediates are produced in combustion.

11. Burning is a non-enzymatic process.