MCQ on Immunology - Antibodies or Immunoglobulins

1. Which of the following is the most abundant immunoglobulin (Ig)

a) IgM
b) IgG
c) IgA
d) IgE

Immunoglobulins

2. Which of the following IgG is targeted against polysaccharides of encapsulated bacteria

a) IgG1
b) IgG2
c) IgG3
d) IgG4

3. IgG consists of

a) 2 light chains and two heavy chains joined by di-sulphide bond (H2L2)
b) 2 light chains and two heavy chains joined by hydrogen bond (H2L2)
c) 2 light chains and a heavy chain joined by di-sulphide bond (H1L2)
d) a light chain and two heavy chains joined by di-sulphide bond (H2L1)

4. Which is the Ig that can cross placenta and provide passive immunity to new born

a) IgM
b) IgG
c) IgA
d) IgE

5. Which is the Ig that first reaches the site of infection

a) IgM
b) IgG
c) IgA
d) IgE

6. Which is the largest Ig

a) IgM
b) IgG
c) IgA
d) IgE

7. Which of the following statements are true regarding IgM

a) IgM is a pentamer and is the largest Ig and called as ‘natural antibody’
b) IgM exists as monomer on B-cell surface
c) IgM is involved in early primary immune response
d) all of these

8. Which of the following statements are true

a) IgM is involved in primary immune response
b) IgG is involved in primary immune response
c) Both IgM and IgG are involved in primary immune response
d) IgG is involved only in secondary immune response

9. The antibody present in secretions like tears, saliva, colostrum is

a) IgM
b) IgG
c) IgA
d) IgE

10. The primary Ig of exocrine secretions is

a) IgM
b) IgG
c) IgA
d) IgE

 

Learn more: Immunology Notes  Immunology MCQs
Answers
1. b) IgG
2. b) IgG2
3. a) 2 light chains and two heavy chains joined by di-sulphide bond (H2L2)
4. b) IgG
5. a) IgM
6. a) IgM
7. d) all of these
8. c) Both IgM and IgG are involved in primary immune response
9. c) IgA
10. c) IgA