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Human Health and Disease — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYHuman Health and Disease3 Marks
Question
Differentiate between Antigen and Antibody.
✓

Answer

Differences between Antigen and Antibody :
S.No.AntigenAntibody
1Bacteria, viruses and toxic substances entering the body is called Antigen.When an antigen enters the body, the glycoprotein ubstances secreted by the B-lymphocyte cells of the body against the antigen are called antibodies
2These cause diseases.These do not cause diseases but destroy germs.
3These combine with macrophages and generate immunity by activating T-helper cells.They directly attack the antigen, form complexes and destroy the antigen.
4Antigens enter from outside.Whereas antibodies are formed inside the body.
5These are found on the surface of the body of micro-organisms or in free state.These are found on the surface of blood plasma cells or in the tissue fluids of the body.
6They are of various types, such as bacteria, viruses, protozoa, pollen, drugs, toxins, and so on.While these are of five types : IgM, IgG, IgA, IgE, IgD

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