Top 150+ Solved Medical Microbiology MCQ Questions Answer
Q. The antibiotic produced from Bacillussubtilis is
a. Vancomycin
b. Bactiracin
c. Both a and b
d. None of these
Q. bacitracin sensitivity test is done for
a. Pneunocci
b. Group ‘A’ Streptococci
c. Gonococci
d. Staphylococci
Q. The effect of antibiotics on micro organisms is mainly due to
a. Inhibition of cell-wall synthesis
b. Damage to the cytoplasmic membrane
c. Inhibition of nucleic acid and protein synthesis
d. All of the above
Q. The antibiotic acting on cell wall is
a. Penicillin
b. Bacitracin
c. Cyclosporin
d. All of the above
Q. Erythromycin belongs to chemical classof antibiotics
a. â-lactose
b. Tetracyclines
c. Macrolides
d. Aminoglycosides
Q. Bacterial resistance to antibiotics istransmitted by
a. Transduction
b. Transformation
c. Mutation
d. Plasmids
Q. Erythromycin inhibits protein synthesis by
a. Attaching to 30 S ribosome unit
b. Attaching to 50 S unit or ribosome
c. By the attachment to t-RNA
d. By the attachment to m-RNA
Q. The function of (THFA) Tetrahydrofolic acidcoenzyme include
a. Amino acid synthesis
b. Thymidine synthesis
c. Protein synthesis
d. Both a and b
Q. Resistant to drugs in tuberculosisdevelops by
a. Transduction
b. Transformation
c. Conjugation
d. Mutation
Q. Which of the following is penicillinaseresistang acid labile penicillin?
a. Amoxycillin
b. Cloxacillin
c. Carbenicillin
d. Methicillin
Q. Which of the following does not inhibitcell wall synthesis?
a. Penicillin
b. Carbenicillin
c. Amikacin
d. Vancomycin
Q. The anti tumor antibiotics act by inhibiting
a. Cell wall synthesis
b. RNA synthesis
c. Cell membrane synthesis
d. The DNA structure & function
Q. Drug resistance to sulphonamides is dueto
a. Production of PABA
b. Folic acid synthetase
c. Drug alteration
d. Low affinity for drug synthesis by bacteria
Q. Drug of choice for methicillin resistantstaph. Aureus is
a. Ampicillin
b. Erythromycin
c. Neomycin
d. Vancomycin
Q. Nalidixic acid activity is due to
a. The inhibition of DNA synthesis
b. Inhibition of protein synthesis
c. The inhibition of cell wall synthesis
d. Both b and c