Which of the following antibodies is a pentamer? IgD IgA IgM IgG All the followi

Question

Which of the following antibodies is a pentamer? IgD IgA IgM IgG All the following are true of IgE except IgE attaches to most cells basophils Antigens react with cell-bound IgE to release granules content such as histamine IgE is involve in many allergic reactions IgE act as an antigen receptor on B cells Almost all antibodies in a newborn is are The result of infection Self made IgM The result of passive immunity Attenuated agents are Dead Virus' Toxins Weakened live organisms Parts of organisms Toxoids are used in vaccines against HIV Diphtheria Polio Herpes simplex type I A positive tuberculin skin test Does not necessarily mean that person has tuberculosis Indicates that person has been infected by M tuberculosis at some point in the past Answers (a) and (b) are correct d. Answers (a) and (b) are false The immunoglobulin class that mediates type I hypersensitivity is IgG IgA IgE IgM and IgG A deficiency of both B cells and T cells is most likely A secondary immunodeficiency An induced immunodeficiency A primary immunodeficiency ALL of the above Hemolytic disease of the newborn is an example of Type I hypersensitivity Type II hypersensitivity Type III hypersensitivity Type IV hypersensitivity All of the following are autoimmune diseases, except Rheumatoid Arthritis Serum Sickness Systemic Lupus autoimmune hemolytic anema Newly emerging diseases may be due to changing lifestyles may reflect microbial evolution may reflect a breakdown in sanitation/social order A, B, and C

Explanation / Answer

ANSWER:

10. c, IgM ( Pentamer with 5 linked immunoglobulins)

11. D , because it is not an antigen receptor on B cells

12. D , Because they are passed from mother through placenta except IgE SO it is a passive immunity

13. C, Because they made by reducing the virulence of pathogen but still they are alive , thus weakened live organisms

14. B, toxoid is a bacterial toxin made for diptheria, tetanus and botulism

15.C, Both options are correct

16.C, IgE ( immediate response )

17. C, Primary immunodeficiency

18. B, type II hypersensitivity

19. B , it is a type III hypersensitivity reaction that results from injection of heterologous or foreign proteins or serum.

20. D , all three are chances for new emerging diseases.

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