medical MCQs – Page 289

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 Review each marked answer and report any item that may be outdated or unclear.

medical Mcqs

1. oral anatomy 2. microbiology 3. oral pathology and medicine 4. physiology 5. biochemistry 6. general anatomy 7. dental materials 8. pharmacology 9. pathology 10. oral histology

5761. Electron microscopic examination of the bacterial flora of necrotising ulcerative gingivitis indicates the presence of microorganisms within non-necrotic tissues in advance of other bacteria. The organisms involved are______________?
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A. Filamentous rods

B. Cocci

C. Bacteriophages

D. Spirochetes

5762. All are true about legionella pneumophilia except______________?
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A. Person to person transmission

B. Aquatic bodies are main habitat

C. It can replicate in amoeba

D. Urine test is a reliable method

5763. Fimbriae are demonstrated by ___________________?
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A. Culture

B. Biochemical reaction

C. Gram stain

D. Haemagglutination test

5764. The binding site for complement on the IgG molecule is in the________________?
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A. CL domian

B. CH1 domian

C. VL domian

D. CH2 domian

5765. The major antiseptic value of soap lies in its ability to_____________?
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A. Remove microbes

B. Inhibit microbial growth

C. Kill mircobes

D. Dehydrate microbial cells

5766. Sporulation occurs in__________________?
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A. Log phase

B. Stationary phase

C. Decline phase

D. Lag phase

5767. Endotoxin have all but one of the properties given below_______________?
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A. Not secreted outside the cell

B. Cannot be toxoided

C. Produced by gram positive bacteria

D. Produced by gram negative bacteria

5768. Which of the following enzyme is required to induce the formation of a plasma clot pathogenic staphylococci_____________?
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A. Coagulase

B. Lysozyme

C. S protein

D. Fibrinolysin

5769. Causative organism for gas gangrene_______________?
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A. Clostridium tetani

B. Clostridium welchii

C. Coli

D. Strep. Faecalis

5770. Silver impregnation method of staining is useful to demonstrate_____________?
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A. Bacterial flagella

B. Spirochetes

C. Both of the above

D. None of the above

5771. Virulence of Gonococcus is due to___________________?
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A. Its intracellular location

B. Cell Membrane

C. Cytolytic enzymes

D. Pili

5772. Which one of the following enteric organisms is anaerogenic and non motile ?
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A. Salmonella typhi

B. Proteus mirabilis

C. Klebsiella pneumonia

D. Shigella sonnei

5773. Which of the following characteristics of bacteria is not true?
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A. Unicellular

B. Having either DNA or RNA

C. Cell wall containing muramic acid

D. Free living

5774. B.C.G untrue is_____________?
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A. All of the above

B. T.B vaccine

C. Orally administered

D. live vaccine

5775. Delayed tuberculin test response is due to_______________?
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A. Monocytes

B. T lymphocytes

C. Histiocytes

D. B lymphocytes

5776. Opacity around colonies of Clostridium perfringens is due to_________________?
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A. Desmolase

B. Lecithinase

C. Theta toxin

D. Cytokinin

5777. Immunoglobulin implicated in atopy and anaphylaxis is_______________?
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A. IgE

B. IgM

C. IgA

D. IgG

5778. All of the following lab tests can be used to distinguish streptococcus mutans from other oral streptococci, except______________?
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A. Colony morphology on saliva agar

B. Production of intracellular and extracellular adherent polysacharide

C. Gram staining

D. Fermentation of mannitol and sorbital

5779. Pathogenic treponemas can be maintained in________________?
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A. Chick embryos

B. Tissue culture

C. Rabbit testis only

D. Artificial media

5780. Staphylococcal food poisoning includes the following features_______________?
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A. Common with dairy products

B. Heat labile enterotoxin

C. Incubation period of 24 hours

D. Requires immediate antibiotics

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