Microbiology Trivia: MCQ Quiz! Exam

20 Questions | By Safeeravly | Last updated: Mar 21, 2022 | Total Attempts: 104

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Microbiology Trivia: MCQ Quiz! Exam - Quiz

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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