Which of the following statements is/are correct?
a. Rapid breathing supplies more oxygen to body cells for producing more energy.
b. Haemoglobin carries oxygen required for respiration.
c. Haemoglobin has more affinity for carbon monoxide than oxygen.
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a, b and c
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a and b
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a and c
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b and c
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b only
A
Correct answer
Explanation
This is the correct answer as all statements are correct. Rapid breathing supplies more oxygen to body cells for producing more energy as required in sports etc. Haemoglobin carries oxygen required for respiration. Haemoglobin has more affinity for carbon monoxide than oxygen, which is why if carbon monoxide is inhaled by someone, then it binds very strongly with the haemoglobin in blood and prevents it from carrying oxygen to brain and other parts of the body and causes carbon monoxide poisoning.