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HESI RN · HESI Pharmacology · Drugs and the immune system

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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

Ciprofloxacin inhibits the bacterial enzyme

A. Transpeptidase

B. DNA gyrase

C. DNA dependent RNA polymerase

D. Dihydrofolate reductase

Correct Answer: DNA gyrase

Question 2 of 5

The most suitable tetracycline for use in a patient with impaired renal function is

A. Chlortetracycline

B. Demeclocycline

C. Oxytetracycline

D. Doxycycline

Correct Answer: Doxycycline

Question 3 of 5

If a patient gives history of urticaria, itching and swelling of lips following injection of penicillin G, then

A. He will develop similar reaction whenever penicillin is injected

B. He can be given ampicillin safely

C. He can be given oral phenoxymethyl penicillin safely

D. All natural and semisynthetic penicillins are contraindicated for him

Correct Answer: All natural and semisynthetic penicillins are contraindicated for him

Question 4 of 5

Which one of the following statements about cefotetan is accurate?

A. It is active against MRSA strains

B. It is the drug of choice in community-acquired pneumonia

C. It is a fourth-generation cephalosporin

D. Its antibacterial spectrum includes Bacteroides fragilis

Correct Answer: Its antibacterial spectrum includes Bacteroides fragilis

Question 5 of 5

The semisynthetic penicillin which is destroyed by acid is

A. Phenoxymethyl penicillin

B. Ampicillin

C. Carbenicillin

D. Cloxacillin

Correct Answer: Carbenicillin

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