Mention the chemical nature of an antibody and name the type of cells they are produced by. Write the difference between active and passive immune responses on the basis of antibodies.
Peptide, B-lymphocytes
Active immunity - The immunity which comes due to exposure to pathogens or immunisation in the body leads to the production of antibodies by the individual, as it is a slow process.
Passive immunity - The immunity which is ready-made antibodies and is directly given to protect the body of an individual against pathogenic agents, as it provides immediate immunity.