UNIT 8 30 ques from CHATGPT

Selective toxicity toward microorganisms

Antimicrobial drugs are effective because they exhibit:

Patient's favorite color

Which of the following is NOT a factor in selecting an antimicrobial agent?

Empiric therapy

Immediate administration of antibiotics before bacterial identification is called:

Gram stain

Which laboratory test is commonly used for the rapid identification of bacteria?

Which antibiotic the microorganism is sensitive to

Antimicrobial susceptibility tests are performed to determine:

All of the above

Which patient factor should be considered before prescribing antibiotics?

Once-daily high-dose administration

Which dosing strategy is most appropriate for antibiotics that exhibit concentration-dependent killing?

Lowest concentration that inhibits bacterial growth

The Minimum Inhibitory Concentration (MIC) is the:

Post-antibiotic effect (PAE)

Drugs that continue to suppress bacterial growth after antibiotic levels fall below the MIC exhibit:

Isoniazid

Which antibiotic is classified as a narrow-spectrum antimicrobial?

Extended-spectrum antibiotic

Ampicillin is considered an:

Tetracycline

Which antibiotic is considered broad-spectrum?

Superinfection

Overuse of broad-spectrum antibiotics may result in:

Ribosomes

Protein synthesis inhibitors act primarily by targeting bacterial:

30S ribosomal subunit

Tetracyclines inhibit protein synthesis by binding to the:

Tooth discoloration

Which adverse effect is commonly associated with tetracyclines?

Pregnant women and children under 8 years old

Tetracyclines are contraindicated in:

Ototoxicity

Aminoglycosides commonly cause:

Hearing loss

Which adverse effect of aminoglycosides may become irreversible?

50S ribosomal subunit

Macrolides inhibit bacterial protein synthesis by binding to the:

Chloramphenicol

Which antibiotic is associated with Gray Baby Syndrome?

Erythromycin

Clindamycin has the same mechanism of action as:

Inhibiting bacterial cell wall synthesis

Penicillins kill bacteria primarily by:

Hypersensitivity reactions

Which adverse effect is commonly associated with penicillin therapy?

Penicillins

Cephalosporins have the same mechanism of action as:

DNA gyrase and topoisomerase IV

Fluoroquinolones inhibit bacterial:

Tendon rupture

Which adverse effect is characteristic of fluoroquinolones?

Dihydropteroate synthetase

Sulfonamides inhibit bacterial:

Dihydrofolate reductase

Trimethoprim inhibits bacterial:

Cotrimoxazole

Which combination antibiotic contains sulfamethoxazole and trimethoprim?