The path of electrons through the two photosystems is called:
Correct answer: C. Z scheme
- A. S scheme
- B. X scheme
- C. Z scheme
- D. Y scheme
Explanation
The Z scheme describes the electron transport pathway through Photosystem II (PSII) and Photosystem I (PSI) in the light-dependent reactions of photosynthesis. It is characterized by a 'Z' shape in the energy diagram of electrons as they are excited by light energy and transferred through various components of the electron transport chain, ultimately resulting in the production of ATP and NADPH, which are utilized in the Calvin cycle.The other options, such as S scheme', 'X scheme', and 'Y scheme', are incorrect because they are not established terminologies or models in the context of photosynthesis electron transport.
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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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