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During cyclic electron transport, which ...

During cyclic electron transport, which one of the following is produced

A

ATP only

B

Erythrose

C

`NADH_(2)`

D

None of these

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding Cyclic Electron Transport**: Cyclic electron transport occurs in the light-dependent reactions of photosynthesis, primarily involving Photosystem I (PSI). In this process, electrons are excited by light energy and are transferred through a series of proteins in the thylakoid membrane. 2. **Electron Flow in Cyclic Transport**: In cyclic electron transport, the electrons that are excited in PSI are not transferred to NADP+ to form NADPH. Instead, they are cycled back to PSI. This process allows for the generation of ATP through photophosphorylation. 3. **Production of ATP**: The primary product of cyclic electron transport is ATP. This occurs because the flow of electrons through the electron transport chain creates a proton gradient across the thylakoid membrane, which drives ATP synthase to produce ATP from ADP and inorganic phosphate. 4. **Evaluating the Options**: The options given are: - A) ATP only - B) Arithros - C) NADH2 - D) None of these Since we established that ATP is produced during cyclic electron transport, we can conclude that the correct answer is option A. 5. **Final Answer**: The correct answer to the question "During cyclic electron transport, which one of the following is produced?" is **A) ATP only**. ---
**Step-by-Step Solution:** 1. **Understanding Cyclic Electron Transport**: Cyclic electron transport occurs in the light-dependent reactions of photosynthesis, primarily involving Photosystem I (PSI). In this process, electrons are excited by light energy and are transferred through a series of proteins in the thylakoid membrane. 2. **Electron Flow in Cyclic Transport**: In cyclic electron transport, the electrons that are excited in PSI are not transferred to NADP+ to form NADPH. Instead, they are cycled back to PSI. This process allows for the generation of ATP through photophosphorylation. 3. **Production of ATP**: The primary product of cyclic electron transport is ATP. This occurs because the flow of electrons through the electron transport chain creates a proton gradient across the thylakoid membrane, which drives ATP synthase to produce ATP from ADP and inorganic phosphate. ...
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