Respiratory System — BIOLOGY STD 6 — Question

1. It is a complex biochemical process which involves enzymes.
2. It involves oxidation of glucose into CO2, water and energy.
3. Energy is released and stored in the form of ATP.
4. It takes place inside the cell.

Breathing

1. It is a mechanical process without the involvement of enzymes.
2. It involves only the exchange of oxygen and CO2.
3. No energy is released.
4. It takes place outside the cell.