Which enzyme is most abundantly found on Earth?
Correct answer: A. Rubisco
- A. Rubisco
- B. Nitrogenase
- C. Invertase
- D. Catalase
Explanation
Rubisco is the most abundant enzyme on Earth, primarily due to its critical role in the Calvin cycle of photosynthesis, where it facilitates the fixation of carbon dioxide into organic compounds. This process is fundamental for producing the organic materials that form the basis of most life on Earth. Other enzymes like nitrogenase, invertase, and catalase have important but more specialized roles and are not as universally abundant as Rubisco.
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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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