question_answer 25)

  Making anti-viral drugs is more difficult than making anti-bacterial medicines because (a) viruses make use of host machinery (b) viruses are on the border line of living and non-living (c) viruses have very few biochemical mechanisms of their own (d) viruses have a protein coat

Answer:

  (a) Designing safe and effective antiviral drug is difficult because viruses use the host's cell to replicate. This makes it difficult to find the exact targets where the drug can interfere with the virus without harming the host organism.