Tobacco mosaic virus was crystallized by__________?
Correct answer: C. Stanely
- A. Pasteur
- B. Chamberland
- C. Stanely
- D. Ivanowski
Explanation
Wendell M. Stanley crystallized tobacco mosaic virus in 1935, demonstrating that viruses could behave like chemical substances outside living cells. Ivanovsky is a likely alternative because he first showed that the agent causing tobacco mosaic disease passed through bacteria-proof filters, but he did not crystallize the virus.
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