Question

Define Antibodies..............
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Answer 1

Answer:

Antibodies are chemical substances made by the body in response to foreign substances (antigens) . They destroy antigens.

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Answer 2

$\huge\bf{Answer :}$

$\bf\green{Antibody :}$ 1. The protein which is produced by the B-lymphocytes in contact to an antigen,which can specially interact with the antigen is called antibody.

2. Antibodies can specially coupled with particular antigen.

3. Antibodies are called as Immunoglobulins.

4. Antibodies are Gamma Globulin proteins which are formed by the plasma cells .

5. Antibodies are found in blood and other fluids which found in body.

6. The part of antibody which reacts with the antigen is called Paratope.

$\bf{Structure\: of \:Antibody :}$

• Antibody is in shape of Y.

• Antibody is made up of 4 structural Units.

• There are two heavy and large and two light and small polypeptide chains.

• One heavy and light chain together forms HL dimer.

• Two HL dimers when combined together then formed Antibody.

• One molecule of an antibody is formed by two similar halves.