ഉച്ഛ്വാസവായുവിലെ ഓക്സിജന്റെ അളവ് എത്ര ശതമാനമാണ് ?
A21 %
B10%
C15%
D20%
Answer:
A. 21 %
Read Explanation:
The amount of oxygen (O₂) in exhaled air is approximately 16%.
Comparison of Inhaled vs. Exhaled Air:
Component | Inhaled Air (%) | Exhaled Air (%) |
|---|---|---|
Oxygen (O₂) | 21% | 16% |
Carbon Dioxide (CO₂) | 0.04% | 4% |
Nitrogen (N₂) | 78% | 78% |
Other Gases | ~1% | ~2% |
The body absorbs oxygen for cellular respiration.
Oxygen is used to produce energy (ATP) in cells.
As a result, exhaled air contains less oxygen and more carbon dioxide (a waste product of metabolism).