Same chapter3 marksDifficulty: Medium
How is an alveolus adapted for gaseous exchange?
The Respiratory System
3 marksDifficulty: Medium
Distinguish between breathing and respiration.
Original Khojo Papers practice question — not from a past board paper.
Answer
Breathing is the physical process of taking air into the lungs and expelling it, and it involves no chemical change and no release of energy. Respiration is the chemical process in every living cell in which food is oxidised to release energy, and it produces carbon dioxide and water.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Breathing supplies the oxygen that cellular respiration uses.
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