Question 1

Which of the following mechanisms is targeted by Amantadine in the treatment of influenza A?

Accepted Answer

Inhibition of viral uncoating

Question 2

A patient with HIV is prescribed Zidovudine. What is the primary mechanism of action for this drug?

Accepted Answer

Blocks HIV RNA to DNA conversion

Question 3

Which antiviral drug is most likely to cause liver toxicity as a side effect?

Accepted Answer

Ritonavir

Question 4

What is the main challenge in developing effective antiviral drugs?

Accepted Answer

Viral mutations can lead to drug resistance

Question 5

Which stage of the viral life cycle is targeted by Oseltamivir?

Accepted Answer

Release

Question 6

Acyclovir is used to treat herpes simplex virus infections. What is its mechanism of action?

Accepted Answer

Mimics nucleotides to halt replication

Question 7

Which of the following is an example of an integrase inhibitor?

Accepted Answer

Raltegravir

Question 8

What is the expected clinical benefit of antiretroviral therapy (ART) in HIV patients?

Accepted Answer

Reduce viral load to undetectable levels

Question 9

Which drug class is most likely administered by injection rather than orally?

Accepted Answer

Immunomodulators (e.g., interferons)

Question 10

Which of the following drugs is used in severe cases of COVID-19 and targets RNA polymerase?

Accepted Answer

Remdesivir

Question 11

Which equation best represents the reduction in HIV viral load over time with ART, assuming exponential decay?

Accepted Answer

$$V(t) = V_0$ e$$^{-kt}$$

Question 12

Which of the following is NOT a mechanism of action for antiviral drugs?

Accepted Answer

Stimulation of viral replication

Question 13

A patient is prescribed Enfuvirtide for HIV. What is the primary action of this drug?

Accepted Answer

Blocks virus binding to host cell membrane

Question 14

Which of the following statements about RNA and DNA viruses is correct?

Accepted Answer

RNA viruses include influenza, HIV, and COVID-19

Question 15

Which drug would be most appropriate for a patient with influenza who needs to shorten the duration of illness?

Accepted Answer

Oseltamivir

Question 16

Which of the following is a common side effect of Oseltamivir?

Accepted Answer

Fatigue

Question 17

Which drug class is responsible for blocking the processing of viral proteins?

Accepted Answer

Protease inhibitors

Question 18

Which of the following best describes the action of immunomodulators in antiviral therapy?

Accepted Answer

Boost host defense mechanisms

Question 19

Which of the following drugs is a reverse transcriptase inhibitor used for HIV?

Accepted Answer

Zidovudine

Question 20

Which of the following is a plausible reason for the limited number of antiviral drug targets?

Accepted Answer

Viruses rely heavily on host cell machinery for replication

Antiviral Drugs: Mechanisms, Examples, and Clinical Use

Study Guide - Practice Questions