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Biology · PYQ NEET UG 2016(1)

हिन्दी

Reduction in pH of blood will

  1. reduce the rate of heart beat.
  2. release bicarbonate ions by the liver.
  3. decrease the affinity of hemoglobin with oxygen.
  4. reduce the blood supply to the brain.

Correct answer · Option 3

decrease the affinity of hemoglobin with oxygen.

Explanation

A decrease in blood pH (increase in \( \text{H}^+ \) concentration and \( \text{CO}_2 \)) shifts the oxygen-hemoglobin dissociation curve to the right, decreasing hemoglobin's affinity for oxygen (Bohr effect).
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