12 Questions
What is the difference between a bactericidal and a bacteriostatic drug?
Bacteriostatic drugs do not kill bacteria, but inhibit their growth
Which of the following is true about antibiotics?
Antibiotics kill or inhibit the growth of microorganisms
Which of the following is true about resistance plasmids (R plasmids, R factors)?
They carry genes for enzymes that can degrade antibiotics.
What is the difference between broad-spectrum and narrow-spectrum antibiotics?
Broad-spectrum antibiotics are active against one or very few types of microorganisms
What is the main role of transposons in resistance plasmids?
To disseminate resistance genes more rapidly.
What is one reason why bacteria can be resistant to antibiotics even if the drug is present in the body?
The drug cannot penetrate the abscess cavity effectively
Under what circumstances can organisms that are killed by penicillin become insensitive to the drug?
When they lose their cell walls and resynthesize them.
Which of the following is a mechanism that bacteria use to become resistant to antibiotics?
All of the above
Which of the following is an example of bacteria reducing permeability to a drug?
Changes in porins reducing the amount of penicillin entering the bacterium
Which of the following best describes the effect of combining two drugs acting separately?
The effect is significantly greater than the sum of the effects of the two drugs
Which of the following is an example of a drug combination that exhibits synergism?
Combination of a sulfonamide with trimethoprim
Which of the following best describes the effect of combining penicillin with a bacteriostatic drug?
The result is significantly lower activity than the sum of the activities of the two drugs alone
Test your knowledge on antibiotics and antimicrobials with this quiz! Learn about the natural and synthetic agents that kill or inhibit the growth of microorganisms. Explore the differences between antibacterials and antibiotics, and discover the world of broad-spectrum antibiotics. Challenge yourself to become an expert on these essential agents used against bacteria, viruses, fungi, and parasites.
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