Bacteriostatic antibiotics do what?

• A. Stop bacterial growth and reproduction (do NOT kill)
• B. Kill bacteria
• C. Inhibit toxin production
• D. Import nutrients

Answer: (A)

Bacteriostatic antibiotics halt bacterial growth and reproduction rather than killing the bacteria directly. They interfere with essential processes needed for replication and protein production, which slows or stops the population from expanding. This gives the body's immune system a chance to clear the infection. Examples include drugs that inhibit protein synthesis or folate synthesis, such as tetracyclines and macrolides.

Killing bacteria outright is the hallmark of bactericidal antibiotics, not bacteriostatic ones. Inhibiting toxin production can be beneficial in some contexts, but it’s not the defining action of bacteriostatic drugs. Importing nutrients isn’t a mechanism used by antibiotics to fight bacteria.