medical MCQs – Page 72

Practise multiple-choice questions from medical for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

1421. 1st generation cephalosporin is________________?
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A. Cefotaxime

B. Cephadroxil

C. Cefepime

D. Cefoperazone

1422. The bacterial resistance to tetracycline is due to___________?
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A. Inactivation of drug by enzymes

B. Decreased uptake of drug by bacteria

C. Alteration of drug binding sites

D. Alteration of dehydrofolate reductase

1423. Role of Heparin_____________?
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A. Prevents prothrombin conversion to thrombin

B. Prevents conversion of fibrinogen to fibrin

C. Prevents synthesis of prothrombin

D. Prevents synthesis of fibrinogen

1424. Which one of the following antibiotics chelates with calcium ?
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A. Erythromycin

B. pencillin

C. Tetracycline

D. Cephalosporins

1425. More potent and non toxic drug against herpes virus is_____________?
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A. Zidovodine

B. Acyclovir

C. Amontidine

D. Nystatin

1426. Which of the following is beta-lactam antibiotic ?
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A. Carbamide

B. Sulphonamide

C. Ofloxacin

D. Cephalosporins
1427. Cell wall synthesis is inhibited by all except____________?
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A. Lincomycin

B. Cephalexin

C. Ampicillin

D. Penicillin

1428. Which drug can be safely used in lactating mothers ?
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A. Chloramphenicol

B. Erythromycin

C. Ampicillin

D. Ciprofloxacin

1429. The most preferred acute emetic for emesis induced by anticancer drugs is______________?
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A. Ondensetron

B. Dicyclomine

C. Metaclopromide

D. Chlorpromazine

1430. The drug which activates plasma antithrombin -III for its anticogulant action is____________?
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A. Heparin

B. Dicumarol

C. Phenindone

D. Idphenadione

1431. Drugs causing hyperglycemia_______________?
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A. Acetylcholine

B. B-blocker

C. Glucocorticoids

D. a-blockers

1432. Colour of teeth stained by tetracycline appear _________ under UV light?
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A. Green

B. Red

C. Brown

D. Yellow
1433. In which of the following categories are ephedrine, tyramine and emphetamine classified________________?
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A. Alpha-adrenergic blocking agents

B. Indirect acting sympathomimetics

C. Anticholinesterases

D. Direct acting sympathomimetics

1434. The anticoagulant action of Warfarin is potentiated by all except_____________?
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A. Vitamin K

B. Phenylbutazone

C. B & C

D. Rifampicin

1435. Which of the following is the main difference between penicillin V and penicillin G____________?
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A. Penicilline-G is more absorbed from the G.I.T

B. Penicilline-G is more allergic than penicillin-V

C. None of the above

D. Penicilline-V is more stable gastric acid
1436. All of the following drugs are components of the MOPP cancer Chemotherapy regimen EXCEPT______________?
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A. Procarbazine

B. Mechlorethamine

C. Vincristine

D. Methotrexate
1437. Which of the following receptors is activated by acetylcholine and blocked by atropine______________?
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A. Muscarinic

B. Beta 1 and 2

C. Nicotinic

D. Alpha 1 and 2

1438. The oral microblal fiora of a patient on prolonged broad spectrume antibiotic therapy is predominantly____________?
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A. Gram positive organism

B. Yeast and fungi

C. Gram negative organisms

D. Anaerobic

1439. Which one of the following drugs is not a reversible anticholinesterase drug ?
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A. Carbaryl

B. Demecarium

C. Tacrine

D. Edrophonium

1440. Which of the following synthetic sterioid shows predominantly mineralocorticoid action ?
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A. Hydrocortisone

B. Dexamethsone

C. Spironolactone

D. Fludrocortisone