1. Differentiate between
(a) Respiration and Combustion
| Respiration | Combustion |
| It takes place inside the living cells |
It is a non-cellular process |
| It is a biochemical process | It is a physiochemical process |
| Energy is released in steps as chemical bonds are broken in steps | Energy is released in a single step as all chemical reactions take place simultaneously |
| Most of the energy is in the form of ATP | ATP formation does not occur |
| It requires enzymes | It is a non-enzymatic process |