Gas is exchanged in the alveoli by the process of _____?
کے عمل سے الوولی میں گیس کا تبادلہ کیا جاتا ہے؟ ______
- Active transport
- Facilitated diffusion
- Simple diffusion
- None of these
Explanation
Gas exchange in the alveoli occurs through simple diffusion, where oxygen moves from high concentration in the alveoli to low concentration in the blood, and carbon dioxide moves in the opposite direction.
This process does not require energy as it follows the concentration gradient.
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