When yeast ferments glucose, the products are
Correct answer: A. Carbon dioxide and ethanol
- A. Carbon dioxide and ethanol
- B. Lactic acid and water
- C. Oxygen and glucose
- D. Hydrogen and methane
Explanation
When yeast ferments glucose without oxygen, it produces ethanol and carbon dioxide through alcoholic fermentation. Other suggested products, such as lactic acid and water, oxygen and glucose, or hydrogen and methane, are incorrect because they occur in different organisms or processes. Therefore, the correct products of yeast fermentation are ethanol and carbon dioxide.
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About Bioenergetics
Cellular respiration explains how cells release energy from glucose through glycolysis, the link reaction, Krebs cycle and electron transport chain. It includes ATP production, substrate-level and oxidative phosphorylation, aerobic versus anaerobic respiration, and the roles of mitochondria, oxygen and fermentation in energy transfer.
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