Advertisements
Advertisements
Question
Describe the antigen-antibody complex
Advertisements
Solution
a. Antibodies are always antigen specific. Combining sites of antigen, called antigenic determinants or epitopes react with corresponding antigen binding sites of antibodies called paratopes.
b. Specificity of an antibody for an antigen lies in its sequence of amino acids within variable regions of two chains. These are active sites of antibody where the molecules bind to specific antigens.
c. Both the arms have same amino acid sequence and therefore bind the same kind of antigen.
d. Thus each antibody can join two antigen like Lock and Key manner called antigen − antibody complex.
APPEARS IN
RELATED QUESTIONS
It is generally observed that the children who had suffered from chickenpox in their childhood may not contract the same disease in their adulthood. Explain, giving reasons, the basics of such immunity in an individual. Name this kind of immunity.
State the cause of adenosine deaminase enzyme deficiency.
Mention role of interferons
Given below is a scheme of classifying immunity against human diseases. Fill up the types of immunity in the blanks 1-9.
Write the full forms of: BCG
Write the full forms of: DPT vaccine
Write the full forms of: ATS
Define health.
Differentiate between B-cells and T-cells.
Macrophages coat bacteria to facilitate their subsequent phagocytosis. This process is known as ____________.
