Biology NEET Full Syllabus Mock Test 180 Questions New Syllabus Mock Test - 11 PCB Single Correct MCQ
Published on: August 12, 2026

Read the following statements carefully and identify the most appropriate answer.

A
Haemoglobin is an iron-containing red pigment found in white blood cells.
Only A, C and D are correct
B
The binding of oxygen to haemoglobin is influenced only by the partial pressure of oxygen and not affected by other physiological factors.
Only B, C and D are correct
C
Each haemoglobin can irreversibly bind with upto four molecules of oxygen.
Only A, D and E are correct
D
The oxygen dissociation curve is obtained when the percentage saturation of haemoglobin with oxygen is plotted against the partial pressure of oxygen.
(E) An increase in hydrogen ion concentration and temperature, reduces the oxygen's affinity for haemoglobin.
Only A, B and C are incorrect

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Text Solution

Verified by Experts
The correct answer is:
D

• Haemoglobin is an iron-containing red pigment found in red blood cells.

• Each haemoglobin can reversibly bind with up to four molecules of oxygen.

• Binding of oxygen with haemoglobin is primarily related to partial pressure of .

• Partial pressure of , hydrogen ion concentration and temperature are the other factors which can interfere with the binding of with Hb.

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