Fermentation is

Correct answer: B. Fermentation occurs in the absence of oxygen

  • A. Fermentation occurs in the presence of oxygen
  • B. Fermentation occurs in the absence of oxygen
  • C. Fermentation produces large amounts of energy
  • D. Fermentation completely breaks down glucose into carbon dioxide and water

Explanation

Fermentation is a type of anaerobic respiration (without oxygen) in which glucose or other carbohydrates are broken down incompletely. It releases energy in the form of ATP and produces byproducts like lactic acid (in animals) or ethanol and CO₂ (in yeast). Unlike aerobic respiration, it does not fully oxidize glucose into carbon dioxide and water.

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