MCQ ON ANTIBODY class 12 for NEET | ANTIBODY class 12 | MCQ ANTIBODY with Answer | Check the below NCERT MCQ question for class 12 Biology based on the with Answers.
MCQ ON ANTIBODY class 12 for NEET
MCQ on ANTIBODY class 12 Biology with answers were prepared based on the latest pattern.We have provided class 12 Biology MCQs questions on ANTIBODY with Answers to help students understand the concept very well.
MCQ ON ANTIBODY is useful for NEET / CSIR / UGC / CBSE / ICSE / AIIMS / EXAM / AFMC EXAM / STATE LEVEL MEDICAL EXAM 2022-23, 2023-24
Introduction:
Everyday we are exposed to large number of infectious agents however only a few these exposes result in disease why this is due to the fact that body is able to defend itself from most of the foreign agents this over all ability of the host to fight the disease causing organisms conferred by the immune system is called immunity. Each of two types innate immunity and acquired immunity. Innate immunity is non specific type of defence that is present at the time of birth .This is a accomplish ed by providing different types of barriers entry of foreign agents in our body. innate immunity consists of four types of barriers, these are physical barriers physiological barriers cellular barriers and cytokin barriers. Acquired immunity on the other hand is pathogen specific. Characterised by memory.
The B- lmphocytes produce in army of protein response to pathogens in our blood to fight with them. This proteins are called antibodies. The T- cells themselves do not secret interbodies but help be B – cells to produce them. Antibody molecule has four peptide chains. To small call light chains and to longer called heavy chains. The antibody that found in blood response is also called humoral immune response. This is 100 2 types of our acquired immune response antibody mediated. The second type is called cell mediated immune response or cell mediated immunity.
MCQ ON ANTIBODY class 12 for NEET
1. The glycoproteins which are of enumerable types it ,specific to specific antigen called
(a) antibiotics
(b) vaccine
(c) antibodies
(d) antigens
Ans (c) antibodies
2. Antibodies occur in
(a) blood plasma
(b) platelets
(c) RBC
(d) none of the above
Ans. (a) blood plasma
3. It’s antibody consists of how many types of polypeptides
(a) 2
(b) 3
(c) 4
(d) 5
Ans. (c) 4
4. The shape of antibodies is
(a) Y shape
(b) L shape
(c) K shape
(d) M shape
Ans.(a) Y shape
5. The antigen binding fragments of arms of antibodies is called
(a) variable region
(b) Vl of light chain
(c) Vh of heavy chain
(d) all the above
Ans.(d) all the above
6. Which antibody is called secretary immunoglobin
(a) IgA
(b) IgD
(c) IgM
(d) IgK
Ans.(a) IgA
7. Mother’s milk cholostrun contain
(a) IgA
(b) IgB
(c) IgD
(d) IgM
Ans.(a)IgA
8. The immunoglobin or antibody effective against toxin and allergens is
(a) IgA
(b) IgM
(c) IgD
(d) igG
Ans.(c) IgD
9. Antibodies which is present in mucus membrane ,skin and lungs .
(a) IgA
(b) IgM
(c) IgE
(d) IgE
Ans. (d) IgE
10. Antibody which is attached to mast cells and basophils for releasing histamine and other substances that mediate hyper sensitive response to allergence
(a) IgA
(b) IgM
(c)IgD
(d) IgE
Ans. (d) IgE
11. Antibody which is present 75% of total immunoglobin present in all body parts
(a) IgG
(b) IgA
(c) IgD
(d) IgM
Ans.(a) IgG
12. Largest antibody with 10 binding sites is
(a) IgA
(b) IgD
(c) IgM
(d) IgE
Ans . (c) IgM
13. The antibody which is first to reach site of infection and activate classical pathway of complement system
(a) IgA
(b) IgM
(c) IgG
(d) IgD
Ans.(c) IgM
14. Which is produced in primary immune response
(a) IgA
(b) IgM
(c) IgD
(d) IgE
Ans. (b) IgM
15. Antibody form of five imoglobin units pentamares is
(a) IgG
(b) IgA
(c) IgM
(d) IgE
Ans.(c) IgM
16. Antibodies are synthesized by
(a) B – lymphocytes
(b) T – lymphocytes
(c) Helper T cells
(d) Memory cells
Ans.(a) B – lymphocytes
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17. Which of the following is released initially as a inflammatory response
(a) interferon
(b) chitin
(c) cytokines
(d) cytokinin
And.(c) cytokines
18. Each immunoglobin has two heavy chains and two a light chains the antigen binding site is found in
(a) variable region of heavy chain
(b) variable region of lighter chain
(c) constant region of light chain
(d) variable region of both heavy and light chain
Ans. (d) variable region of both heavy and light chain
19. Which immunoglobin is the largest in size ?
(a) IgA
(b) IgD
(c) IgE
(d) IgM
Ans.(d) IgM
20. Lysis of foreign cells is mediated through
(a) IgM only
(b) IgA only
(c) IgM and IgG
(d) IgD and IgE
Ans.(c) IgM and IgG
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