NR566 Week 2: Quiz [Mar-2026]

Which BEST describes the action of a bacteriostatic agent?

A. Inhibits bacterial growth and replication, relying on host immunity ✅
B. Alters host immune function to increase bacterial clearance
C. Directly kills bacteria by disrupting cell wall integrity
D. Neutralizes bacterial toxins without affecting bacterial survival

How does gentamicin exert its antibacterial effect?

A. By disrupting DNA gyrase activity and preventing replication
B. By inhibiting folic acid synthesis in susceptible organisms
C. By binding to the 50S ribosomal subunit and inhibiting translocation
D. By binding to the 30S ribosomal subunit, causing misreading of mRNA ✅

What is the primary mechanism by which penicillins exert their bactericidal effect?

A. Disruption of DNA gyrase activity
B. Blocking folic acid synthesis in bacterial cells
C. Inhibition of bacterial ribosome subunits
D. Binds cell-wall synthesizing proteins ✅.……………………purchase all the 20 questions and answers at $20 only