Question

It is difficult to make anti-viral drugs because

• A. Viruses use the host cell as machinery to grow and divide.
• B. Viruses are surrounded by protein coat.
• C. Viruses are one of the borderline of living and non-living state.
• D. Viruses are very small in size.

Answer 1

Answer: (A)

Viruses use the host cell as machinery to grow and divide.

Viruses are non-living outside the host cells and become living inside the host as it uses the host's cells as machinery to replicate. This property of virus makes it difficult to find targets for the drug that would interfere with the virus without also harming the host organism's cells. Thus, the correct answer is option A.