Why were the bacteria infected with viruses that had radioactive protein not radioactive?

Why were the bacteria infected with viruses that had radioactive protein not radioactive?
  1. Because the viral coats were not removed from the bacteria
  2. Because proteins did not enter the bacteria from the viruses
  3. Because RNA entered the bacteria from the viruses
  4. Because the viruses were not grown on radioactive sulfur

Solution

Bacteria that were infected with viruses that had radioactive proteins were not radioactive. This indicates that proteins did not enter the bacteria from the viruses.

Asked in: NCERT

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