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TMV was first virus to be purified and c...

TMV was first virus to be purified and crystallised by an american microbiologist in 1935 for which Nobel Prize was awarded to him in 1946. He was
(a) W. M. Stanley
(b) Peyten Rous
(c) Sumner
(d) Andre Lwoff

A

W. M. Stanley

B

Peyten Rous

C

Sumner

D

Andre Lwoff

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The correct Answer is:
To solve the question regarding the American microbiologist who first purified and crystallized the Tobacco Mosaic Virus (TMV) in 1935 and was awarded the Nobel Prize in 1946, we can follow these steps: ### Step-by-Step Solution: 1. **Identify the Virus**: The question mentions TMV, which stands for Tobacco Mosaic Virus. It is known as the first virus to be purified and crystallized. 2. **Historical Context**: TMV was first purified and crystallized in 1935. This was a significant milestone in virology as it marked the identification of the first virus. 3. **Nobel Prize Award**: The question states that the scientist was awarded the Nobel Prize in 1946 for this work. This is a key detail that helps narrow down the options. 4. **Evaluate the Options**: - (a) W. M. Stanley: Known for his work on TMV and awarded the Nobel Prize in 1946. - (b) Peyton Rous: Known for his work on cancer viruses, not TMV. - (c) Sumner: Known for work on enzymes, not related to TMV. - (d) Andre Lwoff: Known for his work on bacteriophages and viruses, but not specifically TMV. 5. **Conclusion**: Based on the historical context and the evaluation of options, the correct answer is (a) W. M. Stanley. ### Final Answer: (a) W. M. Stanley ---
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