GENERAL ANATOMY
IMMUNE SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Specific binding sites on antibodies join with specific markers on antigens
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Antibodies ignore ‘good’ cells and attack ‘bad’ ones
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Antibodies destroy all the cells they come in contact with
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Both 1 and 2
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Detailed explanation-1: -Antibodies attach to a specific antigen and make it easier for the immune cells to destroy the antigen. T lymphocytes attack antigens directly and help control the immune response. They also release chemicals, known as cytokines, which control the entire immune response.
Detailed explanation-2: -A primary immune response results in the generation of memory immune cells. A secondary immune response occurs as a result of a second exposure to an antigen. It is a much more rapid and sustained response due to the action of memory immune cells.
Detailed explanation-3: -With protein antigens, the antibody molecule contacts the antigen over a broad area of its surface that is complementary to the surface recognized on the antigen. Electrostatic interactions, hydrogen bonds, van der Waals forces, and hydrophobic interactions can all contribute to binding.
Detailed explanation-4: -Unlike a conventional antibody (left), a two-in-one antibody (right) can adapt to bind two different antigens. Unlike a conventional antibody (left), a two-in-one antibody (right) can adapt to bind two different antigens. THE TWO BINDING SITES of most antibodies can bind only one type of antigen.