Multiple choice

Most of the CO2 in blood is carried

  1. as bicarbonate ion in the cytoplasm of red blood cells

  2. in gaseous form in red blood cells bound to haemoglobin.

  3. in gaseous form dissolved in the plasma

  4. as bicarbonate ion dissolved in plasma.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

CO2 is mainly transported in the form of bicarbonate by blood plasma.

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