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NEET UG BIOLOGY MCQ: BREATHING AND EXCHANGE OF GASES
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Medium
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Understanding
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Decrease in pH of blood at tissue level will
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Correct option: C
Decrease the affinity of haemoglobin with oxygen
The correct answer is C (Decrease the affinity of haemoglobin with oxygen) because a decrease in pH (increased acidity) at the tissue level causes hemoglobin to release oxygen more readily, decreasing its affinity for oxygen (Bohr effect).
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Select appropriate choice for the blanks A, B and C to complete the given NCERT statement The largest quantity of air that can be expired after a maximum inspiratory effort is Assertion : Most fish when out of water, die of
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Reason : Atmospheric air contains far less
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water. The faster breathing in high fever is due to the
Select appropriate choice for the blanks A, B and C to complete the given NCERT statement The largest quantity of air that can be expired after a maximum inspiratory effort is Assertion : Most fish when out of water, die of
suffocation.
Reason : Atmospheric air contains far less
oxygen content than the dissolved oxygen in
water. The faster breathing in high fever is due to the