Which one of the following molecules of respiratory chain is found at the lowest energy level?
Correct answer: C. Cytochrome a3
- A. Cytochrome a
- B. Cytochrome b
- C. Cytochrome a3
- D. Cytochrome Q
Explanation
Cytochrome a3, also known as cytochrome c oxidase or Complex IV, is a crucial enzyme in the electron transport chain of cellular respiration. This enzyme plays a central role in the process of oxidative phosphorylation, where electrons are transferred through a series of protein complexes, ultimately leading to the production of adenosine triphosphate (ATP), the cell's primary energy currency.
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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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