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tekilochka [14]
2 years ago
5

Diagram shows the transport of respiratory gases in the human body.

Biology
1 answer:
miss Akunina [59]2 years ago
3 0

Answer:

ai) P= Red blood cell   Q= Alveoli

ii)1. It gives the lungs a large surface area to volume ratio.

2. It is moist and thin.

b) P has a disc or biconcave shape which allows the O2 to bind to it with the help of a protein called haemoglobin for it to be transferred to various parts of the body.

c) Carbon monoxide will bind to the haemoglobin to form carboxyhaemoglobin causing oxygen disruption

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