Antimicrobial Drugs Mechanism Quiz

Play an AI-generated podcast conversation about this lesson

What is the mechanism of action of bacteriostatic antibiotics?

Killing bacteria

Inhibiting protein synthesis

Disrupting bacterial cell wall synthesis

Preventing bacterial reproduction (correct)

Which of the following is a characteristic of probiotics?

They bind to mucosa receptor sites (correct)

They kill pathogenic bacteria directly

They are chemical antibiotics

They are synthetic compounds

Which antibiotic is classified as bactericidal?

Macrolides

Polymyxins

Penicillins (correct)

Tetracyclines

What is the spectrum of activity for macrolides?

Act mainly against gram-positive organisms Signup and view all the answers

Which enzyme in bacteria is much more active against dihydrofolic acid compared to mammalian cells?

Tetrahydrofolic acid reductase Signup and view all the answers

Which combination of antimicrobial agents shows synergism due to sequential blocking of the folic acid synthesis pathway?

Sulfonamides + trimethoprim Signup and view all the answers

Which type of bacteria resistance mechanism involves producing enzymes that destroy the active drug?

Beta-lactamase Signup and view all the answers

What adverse effect is associated with the use of trimethoprim?

Megaloblastic anemia Signup and view all the answers

Which antimicrobial agent works by inhibiting cell membrane function?

Tigecycline Signup and view all the answers

What type of enzymes do bacteria resistant to aminoglycosides produce to destroy the drug?

Phosphorylating enzymes Signup and view all the answers

Which type of anti-microbial drugs act on the 30 S subunit?

Aminoglycosides Signup and view all the answers

Which anti-microbial drug is considered bactericidal?

Aminoglycosides Signup and view all the answers

What is the mechanism of resistance to aminoglycosides?

Bacterial transferase enzymes inactivate the drug by acetylation, phosphorylation, or adenylation Signup and view all the answers

Which anti-microbial drug is known to be teratogenic and cause teeth discoloration?

Tetracyclines Signup and view all the answers

What is the clinical use of tetracyclines like doxycycline?

Treatment of Borrelia burgdorferi and intracellular bacteria like Chlamydia Signup and view all the answers

Which bacteria are aminoglycosides like streptomycin used to treat?

Tuberculosis-causing bacteria Signup and view all the answers

Antimicrobial Drugs Mechanism Quiz

Podcast Beta

Questions and Answers