Study the following w.r.t transportation of gases in human.
a) Effect of concentration of CO₂ and H⁺ ions on the affinity of Hb with O₂ is called chloride shift.
b) Most of CO₂ is transported from tissues to lungs as bicarbonates.
c) In blood, most of the oxygen is transported by plasma.
d) Entry of bicarbonates into RBC and exit of Cl^– ions into plasma is called chloride shift.
Select the option with the correct statement(s).

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c and d

a and d

b, c, d

only b

answer is D.

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Detailed Solution

a) Effect of concentration of CO₂ and H⁺ ions on the affinity of Hb with O₂ is called Bohr's effect.
b) Most of CO₂ is transported from tissues to lungs as bicarbonates.
c) In blood, only 3% of the oxygen is transported by plasma. 97% is carried by the RBCs.
d) Moving of Cl^– ions into RBCs is called chloride shift.

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