Medical MCQs

5099 MCQs  (Page 430 of 510)

Which one of the following antibiotics chelates with calcium ?
A. Pencillin
B. Tetracycline
C. Cephalosporins
D. Erythromycin
Combination chemotherapy is used in tuberculosis in order to reduce____________?
A. Side effects of drugs
B. Cost of therapy
C. Dosage of drugs
D. Development of drug resistance
One of the below mentioned penicillin is NOT given orally______________?
A. Amoxicillin
B. Carbenicillin
C. Cloxacillin
D. Phenoxymethy penicillin
Which of the following penicillins is given by oral route ?
A. Benzyl penicillin
B. Benzathine penicillin
C. Procaine pencillin
D. Penicillin v / phenoxymethyl penicillin
Tetracycline is contraindicated in_____________?
A. Children
B. Pregnancy
C. Renal failure
D. All of the above
Mechanism of action of quinolones is______________?
A. Inhibits dna gyrase
B. Inhibits bacterial protein synthesis
C. Inhibits bacterial cell wall synthesis
D. Inhibits intake of folic acid
The bacterial resistance to tetracycline is due to___________?
A. Alteration of drug binding sites
B. Alteration of dehydrofolate reductase
C. Inactivation of drug by enzymes
D. Decreased uptake of drug by bacteria