1. Discuss the essential differences between a bacterium and a virus.2. State two reasons why it is difficult to treat viral diseases effectively with antiviral drugs.3. Drugs like acyclovir and ganciclovir are two drugs used to treat diseases caused by the herpes virus.Describe the two main ways in which anti-viral drugs can fight specific viral infections.AZT5. The structures of oseltamivir (Tamiflu) and zanamivir...