If IgM is pentamerous and weight of antibody is around 1500000 Da. It is provided that weight of heavy chain of antibody is twice that of light chain. Then  find the approximate weight of dimeric antibody IgA.

A.    More than 590kDa

B.    550kDa

C.   300kDa

D.   30kDa

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If a person X contracts a disease successfully, which kind of immunity has he developed?

A.    Active

B.    Passive

C.   Anamnestic

D.   Humoral

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Colostrum and immunity gained through placenta comes under which class of immunity?

A.    Natural

B.    Passive

C.   Active

D.   More than one option

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When quick immune response is required, we administer which kind of immunization?

A.    Active

B.    Passive

C.   Both depending on pathogen

D.   Generally active sometimes passive

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RDT has not allowed to produce antigenic polypeptide of pathogen in

A.    Bacteria

B.    Yeast

C.    Virus 

D.   Both A and B

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Allergies could be because of

A.    Protected environment provided in early life

B.    Modern day life style

C.   More sensitivity to the environment

D.   All of these

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The cause of autoimmunity can be

A.    Physical appearance

B.    Genetic reasons

C.   Reasons, which are still under research

D.   Both B and C

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The primary lymphoid organs are

A.    Bone marrow and thymus

B.    Bone marrow and spleen

C.   Spleen and thymus

D.   All three

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Which of the following is not a lymphoid organ?

A.    Appendix

B.    Thyroid

C.   Peyer's patches

D.   Tonsils

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The formation of effector lymphocytes will occur in

A.    Bone marrow

B.    Thymus

C.   Appendix

D.   Thyroid

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