Difficulty: Medium
Average Score: 64%
Simulated
Which of the following differentiates a bacteriostatic drug from a bactericidal drug?
Correct answer
B
Rationale
The correct answer is B: Bacteriostatic drugs inhibit bacterial growth, and bactericidal drugs actually kill bacteria. Bacteriostatic drugs work by stopping the growth and reproduction of bacteria, while bactericidal drugs directly kill the bacteria. This key difference in mechanism of action is what separates bacteriostatic from bactericidal drugs. Other options are incorrect because they do not accurately describe the distinction between the two types of drugs. Option A is incorrect because the spectrum of activity (narrow or broad) does not define whether a drug is bacteriostatic or bactericidal. Option C is incorrect as it confuses the mechanisms of action of the two types of drugs. Option D is incorrect as it provides an inaccurate definition of bacteriostatic and bactericidal drugs.