461. Oral infection by penicillinase producing organisms should be treated with____________?

A. Ampicillin
B. Dicloxacillin
C. Erythromycin
D. Any of the above

462. Stepwise mutation for drug resistance is seen with_____________?

A. Penicillin
B. Streptomycin
C. Garamycin
D. Kanamycin

463. Which of the following penicillins is given by oral route ?

A. Benzyl penicillin
B. Benzathine penicillin
C. Procaine pencillin
D. Penicillin V / Phenoxymethyl penicillin

464. Ototoxicity and nephrotoxicity is caused by______________?

A. Antiemetic
B. Antiviral
C. Antifungal
D. antibiotic

465. One of the below mentioned penicillin is NOT given orally______________?

A. Amoxicillin
B. Carbenicillin
C. Cloxacillin
D. Phenoxymethy penicillin

466. 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

467. Which one of the following antibiotics chelates with calcium ?

A. pencillin
B. Tetracycline
C. Cephalosporins
D. Erythromycin

468. Clavulanic acid added to ampicillin causes_____________?

A. Increase effectivity against gram-negative organisms
B. Inhibition of B-lactamases
C. Increase the effectiveness against delta lactamase producing organism
D. Increase effectivity against gram-positive organisms

469. Cephalosporines have all of the following interactions except_____________?

A. Show cross sensitivity with penicillins
B. Are penicillinase resistant
C. Have a broad spectrum but are inactive against anaerobes
D. Are used in upper respiratory tract infections

470. In the treatment of intestinal of intestinal and extraintestinal amoebiasis which of the following drug is useful____________?

A. Diloxane
B. Metronidazole
C. Chloroquine
D. Cefaclor