What is the most common electron transport chain?
Correct answer: A. Non-cyclic electron flow
- A. Non-cyclic electron flow
- B. Cyclic electron flow
- C. Circular electron flow
- D. Both b and c
Explanation
The most common electron transport chain in photosynthesis is the non-cyclic electron flow. In this process, electrons move linearly through Photosystem II and Photosystem I. Water molecules are split in Photosystem II, releasing oxygen as a by-product. In contrast, the electrons finally reduce NADP⁺ to form NADPH. This pathway also generates ATP, providing the energy and reducing power needed for the Calvin cycle."
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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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