Question

Antigen- antibody reactions
A. Always result in precipitation of the complex.
B. Depends only on covalent interactions.
C. Are irreversible.
D. Depend on ionic and hydrophobic interactions.

Answer 1

Hint: Antigen-antibody reaction is the critical response from diverse overseas molecules, which contain pathogens and their chemical toxins, within the frame in which the frame is included. Although there are only five large groups of antibodies, there may be a separate binding site for each antibody that matches a particular antigen. In fact, the body can create an unlimited number of binding sites for antigens to bind to.

Complete Answer:
- Antigen-antibody interaction or antigen-antibody reaction is a particular chemical interaction between antibodies that is formed with the assistance of white blood cell B cells and antigens at some stage in the immune response. Such answers are reversible. These are focused on hydrogen bonding, ionic bonding, and antigen and antibody hydrophobic interactions.
- Popular forms of antigen-antibody reactions-Sensitization, Haemagglutination, Haemolysis, Neutralization, Precipitation.

Hence the correct answer is option D.

Additional information:
Antigens are compounds capable of triggering an immune response. Each antigen has different surface characteristics, or epitopes, which lead to specific responses. The antibodies are produced by an effective form of B-cell called plasma cells when exposed to antigens. The antigen-binding site is a region of an antibody responsible for binding to antigens. It makes up the vector area of each heavy and light chain.

Note: Antigens with intense affinity in the blood are sure to form an antigen-antibody complex via antibodies. As a biological instrument for contamination of one-of-a-kind viruses, it is often used along with HIV, bacteria, and helminth parasites. Antigen-antibody reactions are blocked during a chronic inflammatory reaction.