Question

Most antibiotics have no effect on viruses because

• A. They kill all bacteria, which act as host of the virus.
• B. Viruses are too small in size for the antibiotics to act on them.
• C. Viruses show no metabolism of their own.
• D. Viruses produce thick covering and encyst themselves as endospores.

Answer 1

The correct option is C Viruses show no metabolism of their own.

Most antibiotics have no effect on viruses because viruses do not have metabolism on their own. They use host cells to perform their activities for them. Most of the antibiotics act by suppressing DNA replication and protein synthesis.

Thus, the correct answer is option 'Viruses show no metabolism of their own'.