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Antibodies : Structure and Classification MCQ - Practice Questions with Answers
Edited By admin | Updated on Sep 18, 2023 18:34 AM | #NEET
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Antibodies is considered one of the most asked concept.
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17 Questions around this concept.
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EASYIf you suspect a major deficiency of antibodies in a person, to which of the following would you look for confirmatory evidence?
Read the following four statements (A-D):
(A) Colostrum is recommended for the newborn because it is rich in antigens.
(B) Chikungunya is caused by a gram-negative bacterium.
(C) Tissue culture has proved useful in obtaining virus-free plants.
(D) Beer is manufactured by the distillation of fermented grape juice.
How many of the above statements are wrong?
Which one of the following is used to treat cancers?
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Concepts Covered - 0
Antibodies
- Antibodies are glycoproteins formed in response to antigenic stimulation and counteract with antigens with great specificity.
- The antibodies are found in the serum fraction of the blood and are also known as immunoglobulins (Ig).
- Each antibody molecule has four peptide chains, two small called light chains and two longer called heavy chains.
- Hence, an antibody is represented as H2L2.
- Each light-chain contains a single variable-domain and a single constant-domain.
- Each heavy-chain contains a singly variable-domain and three, sometimes, four constant-domains.
- Variable (V) regions of both the chains lie opposite to each other at the top of the two arms of the antibody molecule and represent the site where the antigen-antibody-binding takes place.
- According to their physicochemical properties, the immunoglobulins are subdivided into five different classes, namely, IgG, IgA, IgM, IgD, and IgE.
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