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Question

5% of CO2 is dissolved in ___(i)____. Another form in which CO2 is transported is when it combines with hemoglobin and this form is called ___(ii)____hemoglobin. CO2 entering the erythrocytes reacts with water to form carbonic acid in the presence of ____(iii)_____. Carbonic acid is an intermediate step; it dissociates to form a hydrogen ion (H+) from the carbonic acid, leaving___(iv)____ dissolved in the blood.


A

1. Plasma 2. Carbamino 3. Carbonic anhydrase 4. Bicarbonate

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B

1.Carbamino 2. Carbonic anhydrase 3. Bicarbonate 4. Plasma

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C

1.Plasma 2. Carbonic anhydrase 3. Bicarbonate 4. Carbamino

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D

1.Plasma 2. Bicarbonate 3. Carbamino 4. Carbonic anhydrase

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Solution

The correct option is C

1. Plasma 2. Carbamino 3. Carbonic anhydrase 4. Bicarbonate


5% of CO2 is dissolved in plasma. Another form in which CO2 is transported is when it combines with hemoglobin and this form is called carbamino hemoglobin. CO2 entering the erythrocytes reacts with water to form carbonic acid in the presence of carbonic anhydrase. Carbonic acid is an intermediate step, it dissociates into hydrogen ion from the carbonic acid, leaving bicarbonate dissolved in the blood


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