medical MCQs – Page 284

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 Review each marked answer and report any item that may be outdated or unclear.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

5661. Which of the following is not a feature of anaphylaxis ?
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A. None of the above

B. Immediate reaction

C. Delayed reaction

D. passive transfer by serum

5662. On a stained slide, clostridium tetani has the appearance of a__________________?
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A. Bunch of a

B. Safely pin

C. Chain of beads

D. Drum stick

5663. Immunoglobin, Which is produced first by the fetus in response to infection_______________?
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A. IgM

B. IgG

C. IgD

D. IgA

5664. Plasmid__________________?
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A. Involved in multidrug resistance transfer

B. Involved in conjugation

C. Imparts capsule formation

D. Imparts pili formation

E. Both A & B

5665. Diphtheria is pathogenic only when infected with______________?
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A. Beta phage

B. Alfa phage

C. Lambda K12

D. Delta Phage

5666. The function of IgD is______________?
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A. Antigen recognition by B cells

B. Reagin activity

C. Localization protection in external secretion

D. Compliment activation

5667. Which organism causes prosthetic valve endocarditis within 60 days of surgery________________?
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A. Fungus

B. Staphylococcus aureus

C. Streptococcus Viridans

D. Staphylococcus epidermis

5668. About Bacteroids True are all Except_______________?
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A. Most common species is B fragilis

B. Bile resistant anerobes

C. Present mainly in mixed infections

D. Susceptible to many antibiotics

5669. The diagnosis of gonorrhea is established by_____________?
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A. Pili agglutination tests

B. Haemagglutination tests

C. All of the above tests

D. Compliment fixation tests

5670. An example of naturally acquired passive immunity is__________________?
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A. Placental transfer of antibodies

B. Gamma globulin injection

C. Immune blood transfusion

D. Hepatitis vaccination

5671. Selective media for MYCOBACTERIUM _____________?
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A. Lowenstein Jensen medium

B. Sabourauds medium

C. Loefflers serum slope

D. Agar agar

5672. Encapsulation in bacteria helps in__________________?
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A. Oxygen effect

B. Spore formation

C. Decreased virulence

D. Prevent their phagocytosis

5673. Sterilisation is______________?
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A. Non-pathogenic killed

B. All pathogenic and non-pathogenic microorganisms killed

C. Pathogens killed but spores are not affected

D. Only pathogenic micro-organisms killed

5674. Dental Plaque adheres to tooth surface by________________?
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A. Bacteria

B. Dextran

C. Epithelial cells

D. Sucrose

5675. The interaction of antigens with antibodies on the surface of a mast cel leads to degranulation and anaphylaxis. The mast cell granules produce anaphylaxis because they contain________________?
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A. Proteolytic enzymes

B. Lymphotoxins

C. Vasoactive mediators

D. Lysosomes

5676. In T.B cell mediated immunity is by_______________?
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A. CD 4*

B. None of the above

C. B lymphocytes

D. CD 8*

5677. Glasswares are sterilised by______________?
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A. Incineration

B. Hot air oven

C. Formaldehyde

D. Autoclaving

5678. The mechanism of genetic transfer where a phage serves as a vehicle is_______________?
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A. Transduction

B. Conjugation

C. Translation

D. Lysogeny

5679. Which component of the cell wall is responsible________________?
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A. Region II

B. Region III

C. Region I

D. Boivin antigen

5680. The Ig found in exocrine secretions is_____________?
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A. IgG

B. IgM

C. IgD

D. IgA

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