Microbiology Trivia: MCQ Quiz! Exam

20 Questions | Total Attempts: 46

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Microbiology Trivia: MCQ Quiz! Exam

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Questions and Answers
  • 1. 
    Which of the following complement component is the common link in the classical and alternate pathway of the complement system?
    • A. 

      C1

    • B. 

      C2

    • C. 

      C3

    • D. 

      C4

  • 2. 
    Which of the following cell types are the most potent activators of native T cells?
    • A. 

      B cells

    • B. 

      Follicular dendritic cells

    • C. 

      Mature dendritic cells

    • D. 

      Macrophages

  • 3. 
    All the following statements about carbohydrates antigens are true except:
    • A. 

      Good memory response

    • B. 

      Poor immunogenecity

    • C. 

      T cell independent immunity

    • D. 

      Polyclonal response

  • 4. 
    Ovalbumin was injected into a rabbit. Which of the following classes of antibiotics are likely to be produced initially?
    • A. 

      IgG

    • B. 

      IgM

    • C. 

      IgE

    • D. 

      IgD

  • 5. 
    Peptide-binding site on class I MHC molecules for presenting processed antigens to CD8 T Cells is formed by:
    • A. 

      Proximal domain of alpha subunits

    • B. 

      Distal domain of alpha subunit

    • C. 

      Proximal domains of alpha and beta subunits

    • D. 

      Distal domains of alpha and beta subunits

  • 6. 
    Which of the following statement regarding disinfectants is not true:
    • A. 

      Hypochlorites are bactericidal and inactivated by organic matter

    • B. 

      Glutaraldehyde is sporicidal and not inactivated by organic matter

    • C. 

      Formaldehyde is bactericidal ,sporicidal and virucidal

    • D. 

      Phenol is bactericidal and readily inactivated by organic matter

  • 7. 
    Culture media used for diagnosis of EHEC O157: H7 is 
    • A. 

      O7 culture

    • B. 

      Sorbitol mac conkey media

    • C. 

      XLD agar

    • D. 

      Deoxychlolate media

  • 8. 
    Primary receptors for human immunodeficiency virus (HIV) is:
    • A. 

      CD4

    • B. 

      CD8

    • C. 

      CD56

    • D. 

      CD3

  • 9. 
    All of the following are functions of CD4 helper cells except:
    • A. 

      Immunogenic memory

    • B. 

      Produce immunoglobulins

    • C. 

      Activate macrophages

    • D. 

      Activate cytotoxic cells

  • 10. 
    Which of the following is most resistant to antiseptics:
    • A. 

      Spore

    • B. 

      Prion

    • C. 

      Cyst

    • D. 

      Fungus

  • 11. 
    Which of the following statements about gram-positive cocci is false:
    • A. 

      Staphylococcus saprophyticus causes UTI in females

    • B. 

      Micrococci are oxidase positive

    • C. 

      Most enterococci are sensitive to pencillin

    • D. 

      Pneumococci are capsulated

  • 12. 
    Which of the following statements about prion is true:
    • A. 

      They are infectious proteins

    • B. 

      They are made up of bacteria and virus

    • C. 

      They have rich nuclear material

    • D. 

      They can be cultured in cell free media

  • 13. 
    A young male patient presented with UTI on urine examination pus cells were found but no organisms. Which method would be best used for culture?
    • A. 

      Mc Coy culture

    • B. 

      Thayer martin medium

    • C. 

      L.J.Medium

    • D. 

      Levinthal Medium

  • 14. 
    Which one of the following is true:
    • A. 

      Agar has nutrient properties

    • B. 

      Chocolate medium is selective medium

    • C. 

      Addition of selective substances in a solid medium is called enrichment media

    • D. 

      Nutrient broth is a basal medium

  • 15. 
    Component of innate immunity that is active against viral cells includes:
    • A. 

      NK cells

    • B. 

      Cytotoxic T cells

    • C. 

      B cells

    • D. 

      Memory B cells

  • 16. 
    Irradiation can be used to sterIlize A/E.
    • A. 

      Bone graft

    • B. 

      Suture

    • C. 

      Artificial tissue graft

    • D. 

      Bronchoscope

  • 17. 
    Antigen-antibody precipitation is maximally seen in which of the following?
    • A. 

      Excess of antibody

    • B. 

      Excess of antigen

    • C. 

      Equivalance of antibody and antigen

    • D. 

      Antigen hapten interaction

  • 18. 
    All are except regarding Widal test ,except:
    • A. 

      Baseline titres differ depending on the endemicity of the diseases

    • B. 

      High titre value in a single widal test is not confirmative

    • C. 

      O antibody lasts longer and hence is not indicative of recent infection

    • D. 

      H antibody cannot differentiate between types

  • 19. 
    Culture media of leptospirosis:
    • A. 

      Korthof

    • B. 

      Perkin

    • C. 

      Tinsdale

    • D. 

      Bakers

  • 20. 
    All of the following statements are true about bacteriophage except:
    • A. 

      It is a virus that infect bacteria

    • B. 

      It helps in transduction of bacteria

    • C. 

      It imparts toxigenicity to bacteria

    • D. 

      It transfer only chromosomal gene