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19 March, 06:07

What happens when heavy exercise results in too much acid in the human body?

A) Excess H + is absorbed by bicarbonate ions.

B) Bicarbonate releases one H + to become carbonate.

C) H2CO3 is formed from H2O and CO2.

D) Bicarbonate is formed from carbonate.

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Answers (1)
  1. 19 March, 08:40
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    A) Excess H + is absorbed by bicarbonate ions.

    Explanation:

    During heavy exercises we breathe faster to have more oxygen. In presence of high or sufficient amount of oxygen in our body we produce energy by breaking of pyruvate through aerobic pathway (the normal one). However in absence of required oxygen the body still can produce energy by opting the anaerobic pathway where lactate is being produced.

    Thus the pH of body becomes acidic.

    This excess H⁺ can be absorbed by bicarbonate ions.
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