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Carbonic acid and bicarbonate ions buffer which of the following?

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Carbonic acid and bicarbonate ions buffer which of the following?

(a) Cytosol

(b) Cytoplasm

(c) Blood

(d) Lymph

The question was asked in class test.

Origin of the question is Chemical Basis of Life topic in section Chemical Basis of Life of Cell Biology

1 Answer

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Best answer
Right choice is (c) Blood

To elaborate: Carbonic acid and bicarbonate ions buffer the blood and hold its pH at 7.4. Carbonic acid is a weak acid and bicarbonate ions are basic in nature. A change in pH of the blood can lead to abnormalities.

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