Immunology FYBSc Microbiology MCQs Set-3

microbiology mcqs

1:Antigen-antibody reactions are 

(a) Reversible 
(b) Irreversible 
(c) Specific 
(d) Both a and b

Answer:(d) Both a and b

2:Serological reactions are useful for 

(a) Detection of antigens 
(b) Detection of antibodies 
(c) Both a and b 
(d) None of these

Answer:(c) Both a and b 

3:For the separation of antigens the method used is 

(a) Immunoelectrophoresis 
(b) Flocculation 
(c) Agglutination 
(d) None of these

Answer:(a) Immunoelectrophoresis 

4:Counter immunoelectrophoresis is useful for detection of 

(a) One antigen/antibody 
(b) Two antigens/antibody 
(c) More than two 
(d) None of these 

Answer:(a) One antigen/antibody 

5:When a particular antigen is mixed with antibody in the presence of an electrolyte at suitable temperature and pH the particles are clumped, this is called: 

(a) Precipitation 
(b) Agglutination 
(c) Electrophoresis 
(d) CIE

Answer:(b) Agglutination 

6:Toxins and viruses can be detected by 

(a) Precipitation 
(b) Agglutination 
(c) Neutralisation 
(d) None of these

Answer:(c) Neutralisation 

7:Which is most antigenic?

(a) Exotoxins 
(b) Endotoxins 
(c) Viruses 
(d) All of these

Answer:(a) Exotoxins 

8:Shick test is used for the detection of 

(a) Diphtheria 
(b) T.B. 
(c) Cholera 
(d) Typhoid

Answer:(a) Diphtheria 

9:Secondary function of complements are 

(a) Haemolysis 
(b) Phagocytosis 
(c) Both a and b 
(d) None of these

Answer:(c) Both a and b 

10:Very effective, less time consuming and at a time so many samples can be detected by 

(a) ELISA 
(b) CFT 
(c) Neutralization 
(d) Agglutination

Answer:(a) ELISA 

11:â-cells are involved in

(a) Humoral immunity 
(b) Cell-mediated immunity
(c) Active immunity 
(d) Passive immunity

Answer:(a) Humoral immunity 

12:Innate immunity is 

(a) Specific
(b) Non-specific 
(c) Active 
(d) Passive

Answer:(b) Non-specific 

13:Innate immunity is developed by 

(a) Mechanical barriers 
(b) Chemical barriers
(c) Both a and b
(d) None of these

Answer:(c) Both a and b

14:Acquired immunity is 

(a) Natural 
(b) Artificial 
(c) Active & Passive 
(d) All of these

Answer:(d) All of these

15:Acquired immunity can be developed by 

(a) Natural means 
(b) Artificial means 
(c) Both a and b 
(d) None of these

Answer:(c) Both a and b 

16:Immediate type hypersensitivity reactions are 

(a) Type-I 
(b) Type-II 
(c) Type-III 
(d) All a, b and c

Answer:(d) All a, b and c

17:Immediate type of hypersensitivity reactions are mediated by 

(a) T-cells 
(b) β-cells 
(c) Mast cells 
(d) Macrophages

Answer:(b) β-cells 

18:Example for cell-mediated immunity are 

(a) Tuberculin type 
(b) Contact dermatitis 
(c) Granulomatous 
(d) All of these

Answer:(d) All of these

19:Mountax reaction is used for detection of 

(a) T.B. 
(b) Diphtheria 
(c) Cholera 
(d) None of these

Answer:(a) T.B. 

20:All the antibodies produced from a â-cell are having 

(a) Similar specificity 
(b) Different specificities 
(c) Similar size 
(d) None of these

Answer:(a) Similar specificity 

21:Hybridoma formation in hybridoma technique is from 

(a) Spleen cell – Myeloma cell 
(b) Spleen cell – Spleen cell 
(c) Myeloma cell – Myeloma cell 
(d) None of these 

Answer:(a) Spleen cell – Myeloma cell 

22:Anthrax vaccine is prepared by 

(a) Attenuated bacilli 
(b) Killing the bacilli 
(c) Live bacilli 
(d) None of these

Answer:(a) Attenuated bacilli 

23:Attenuated, oral poliomyelitis vaccine is 

(a) BCG 
(b) Measles vaccine 
(c) Sabin vaccine 
(d) TAB vaccine

Answer:(c) Sabin vaccine 

24:Killed, polio vaccine is 

(a) Sabin vaccine 
(b) Salk 
(c) BCG 
(d) TAB

Answer:(a) Sabin vaccine 

25:Measles vaccine is given to children at the age of 

(a) 1 year 
(b) 7 months 
(c) between 9 months and 10 years 
(d) None of these

Answer:(c) between 9 months and 10 years 

26:Pertussis vaccine is 

(a) Heat killed 
(b) Formalin killed 
(c) Attenuated 
(d) Live

Answer:(b) Formalin killed 

27:DPT is 

(a) Triple vaccine 
(b) Double vaccine 
(c) Tetanus toxoid 
(d) All of these

Answer:(a) Triple vaccine 

28:DPT, is used as vaccine for 

(a) Diphtheria 
(b) Pertussis vaccine 
(c) Tetanus toxoid 
(d) All of these

Answer:(d) All of these

29:DPT is given to children at the age of 16- 24 months, as the dose is 

(a) 0.5 ml at intervals of 4 weeks 
(b) A booster dose of 0.5 ml 
(c) Both a and b 
(d) None of these 

Answer:(c) Both a and b 

30:If more than one kind of immunizing agent is included in the vaccine, it is 

(a) Cellular vaccine 
(b) Recombinant vaccine 
(c) Mixed vaccine
(d) Toxoid vaccine

Answer:(c) Mixed vaccine