Question

Chemiosmotic theory was first put forward by

• A. Peter Mitchell
• B. Paul Boyer
• C. John Walker
• D. Julius Sachs

Hint:

Chemiosmotic theory:
- Proposed by Peter Mitchell (1961).
- Explains ATP synthesis via proton gradient.
- Nobel Prize for Mitchell in 1978.

Answer 1

The Correct Option is A

Step 1: Understanding the Question:
This question tests knowledge of the history of biochemistry and ATP synthesis.

Step 2: Detailed Explanation:
The chemiosmotic theory was proposed by Peter Mitchell in 1961.
It explains ATP synthesis through a proton gradient across the inner mitochondrial membrane.
Paul Boyer (B) and John Walker (C) worked on ATP synthase and won the Nobel Prize in 1997.
Julius Sachs (D) was a botanist known for plant physiology.
Thus, Peter Mitchell proposed the chemiosmotic theory.

Step 3: Final Answer:
Thus, the chemiosmotic theory was proposed by Peter Mitchell, which corresponds to option (A).
[0.5cm]