Asked in PMC Practice Test 20 (2021) 2021Moderate

The biochemical process used in the synthesis of alcohol in the presence of yeast is called as _ ?

Correct answer: C. Fermentation

  • A. Respiration
  • B. Photosynthesis
  • C. Fermentation
  • D. Aerobic respiration

Explanation

Fermentation is a process of central metabolism in which an organism converts a carbohydrate, such as starch or sugar, into an alcohol or an acid. For example, yeast performs fermentation to obtain energy by converting sugar into alcohol

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About Cellular Respiration

Cellular respiration releases energy from glucose through glycolysis, the link reaction, the Krebs cycle and the electron transport chain, producing ATP. The pathway differs in oxygen availability: aerobic respiration uses oxygen and yields more ATP, while anaerobic respiration produces much less ATP and forms lactic acid in muscles or ethanol and carbon dioxide in yeast.

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