Multiple choice

Which of the following is a helical virus?

  1. TMV

  2. Polio virus

  3. Herpes virus

  4. Vaccinia virus

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A Correct answer
Explanation

Tobacco Mosaic Virus (TMV) is the classic example of a helical virus. Its RNA genome is surrounded by protein subunits arranged in a helical spiral around the nucleic acid, giving it a rod-like appearance.

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