Making anti-viral drugs is more difficult than making anti-bacterial medicines because
Viruses make use of host machinery.
Viruses are on the border line of living and non-living.
Viruses have very few biochemical mechanisms of their own.
Viruses have a protein coat.
The correct option is C Viruses have very few biochemical mechanisms of their own.
Making anti-viral medicines is difficult than making anti-bacterial drugs because viruses have few biochemical mechanism of their own. Being obligate cellular parasites, viruses enter the cells and use the cellular machinery for other life processes. Without knowing the biochemical mechanism one cannot develop an anti-viral drug.