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NEET UG BIOLOGY MCQ: BODY FLUIDS AND CIRCULATION
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Haemoglobin (Hb) transports oxygen from the lungs to tissues. The partial pressure of the oxygen in lungs is different from that tissues. Each Hb can bind to up to four oxygen molecules. Suppose, we have an equal number of Hb and oxygen molecules and all the oxygen molecules are in bounded form. Then, which of the following is true?
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Correct option: C
Nearly one-fourth of all the Hb molecules are bound to four oxygen molecules each
Option C (Nearly one-fourth of all the Hb molecules are bound to four oxygen molecules each) is correct because if there are equal numbers of Hb and oxygen molecules, and each Hb can bind up to four oxygen molecules, then statistically, one-fourth of the Hb molecules will be fully saturated with four oxygen molecules.
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