63) Why is it difficult to develop drugs that specifically target viruses and eukaryotic pathogens?
A) Security enzymes break down these foreign drugs before they can exert their effects.
B) Viruses and eukaryotes evolve too rapidly for drugs to be effective.
C) The ethical concerns with testing these drugs are too great.
D) There are often duplicate metabolic pathways that pick up the slack from any disturbance caused by these drugs.
E) The drugs often inflict collateral damage on our own cells.