Q:

Which of the statements below is correct

0

Which of the statements below is correct?


  1. The dihydrogen phosphate component of the phosphate buffer releases hydrogen ions into the lungs for excretion, and in the process, reverts to monohydrogen phosphate.
  2. Haemoglobin as it passes through the lungs, releases hydronium ions, which are breathed out.
  3. Carbon dioxide that is dissolved in blood diffuses into the alveoli and is breathed out.
  4. Hydronium ions react with bicarbonate ions to form carbonic acid which moves into the lungs for exhalation.

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C: Carbon dioxide that we breathe out enters the alveoli after diffusing

there from the blood plasma. No other gas is excreted.

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