Microbiology Trivia: MCQ Quiz! Exam
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- 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
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