Choose the correct answer from the alternatives given. Which of the following is not a means by which oxygen and/or carbon dioxide are transported in the bloodstream of vertebrates?
A
As oxyhaemoglobin
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B
As hydrogencarbonate ions
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C
In solution in the plasma
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D
Erythropoietin
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Solution
The correct option is D Erythropoietin Carbon dioxide is transported in the blood from the tissue to the lungs in three ways: (i) dissolved in solution in the plasma; (ii) buffered with bicarbonate (i.e as hydrogen carbonate ions) and (iii) bound to proteins, particularly hemoglobin. So, the correct option is 'Erythropoietin'.