Microbiology

Question 1

Give example antibiotics with the mechanism of action of: Binding to bacterial ribosomes and disrupting protein synthesis?

Answer 1

Macrolides (Azithryomycin, Erythromycin, Clarithromycin), Aminoglycosides (Gentamicin), Chloramphenicol

Question 2

Most likely causative organisms of meningitis in immunosuppressed patients

Answer 2

Strep pneumonia, Nisseria meningitidies, Listeria monocytogenes, aerobic G- bacilli

Question 3

What type of virus is the mumps virus

Answer 3

paramyxovirus family

Question 4

Give example antibiotics with the mechanism of action of: Interfering with bacterial cell wall synthesis?

Answer 4

Penicillins, cephalosporins

Question 5

Give example antibiotics with the mechanism of action of: Inhibition of DNA gyrase

Answer 5

Fluoroquinolones

Question 6

Give example antibiotics with the mechanism of action of: Inhibition of bacterial folate synthesis

Answer 6

Trimethoprim, Sulfonamides (Sulfamethoxazole)

Question 7

Which organism classically causes bloody diarrhoea with mucus, abdominal cramping and tenesmus without vomiting? What would be the antibiotic of choice?

Answer 7

Shigella.

Cephalosporins