Multiple choice

Which of the following processes releases a carbon dioxide molecule?

  1. Glycolyis

  2. Lactic acid fermentation

  3. Alcohol fermentation

  4. Hydrolysis of glycogen
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C Correct answer
Explanation

Alcohol fermentation by yeast converts pyruvate to ethanol and releases CO2 as a byproduct. This process creates carbonation in bread and beverages. Glycolysis produces pyruvate without releasing CO2, lactic acid fermentation converts pyruvate to lactate without CO2, and glycogen hydrolysis only breaks glycogen into glucose units.

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