Which process can take place in the presence and absence of oxygen?
Correct answer: A. Glycolysis
- A. Glycolysis
- B. Cellular respiration
- C. Fermentation
- D. None of the above
Explanation
This is the correct answer. Glycolysis is the metabolic pathway that breaks down glucose into pyruvate, producing ATP (energy) in the process.It is the first stage of cellular respiration and can occur both in the presence (aerobic conditions) and absence (anaerobic conditions) of oxygen.
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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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