The chemiosmotic theory ofr photophosphorylatrion was given by

Options

A. P-Mitchell
B. Amon
C. Arnold
D. Anderson

Answer

To answer the question regarding who proposed the chemiosmotic theory of photophosphorylation, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for the scientist who proposed the chemiosmotic theory related to photophosphorylation.

2. **Identifying the Options**: The options provided are:
- A. P. Michel
- B. Ehman
- C. Arnold
- D. Anderson

3. **Reviewing Each Option**:
- **Option B: Ehman** - This scientist is known for contributions to cell division and cell theory, not specifically for the chemiosmotic theory.
- **Option C: Arnold** - He is recognized for his work related to light emission in photosynthesis, but not for the chemiosmotic theory.
- **Option D: Anderson** - This scientist contributed to the study of photosynthetic membranes but did not propose the chemiosmotic theory.
- **Option A: P. Michel** - Peter D. Mitchell is the scientist who proposed the chemiosmotic theory of photophosphorylation, which explains how ATP is generated in chloroplasts and mitochondria.

4. **Conclusion**: After analyzing the contributions of each scientist, we can conclude that the correct answer is **Option A: P. Michel**.

### Final Answer:
The chemiosmotic theory of photophosphorylation was given by **P. Michel**.

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