Question
Name and explain the two types of immune responses in humans.
✓
Answer
There are two immune response.
i. The primary immune response occurs when an antigen comes in contact with the immune system for the first time. During this time the immune system has to learn to recognize the antigen and how to make an antibody against it and eventually produce memory lymphocytes.
ii. The secondary immune response occurs when the second time (3rd, 4th, etc.) the person is exposed to the same antigen. At this point, immunological memory has been established and the immune system can start making antibodies immediately.
i. The primary immune response occurs when an antigen comes in contact with the immune system for the first time. During this time the immune system has to learn to recognize the antigen and how to make an antibody against it and eventually produce memory lymphocytes.
ii. The secondary immune response occurs when the second time (3rd, 4th, etc.) the person is exposed to the same antigen. At this point, immunological memory has been established and the immune system can start making antibodies immediately.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
What is sewage? In which way can sewage be harmful to us ?
Explain with suitable examples the homology and analogy found in the plant or its parts.
Define the terms and give one example for each: Parasitism
Draw a labelled diagram of male reproductive system.
Depending upon the chemical nature of the template (DNA or RNA) and the nature of nucleic acids synthesized from it (DNA or RNA), list the types of nucleic acid polymerases.
Draw a well labelled diagram of mature graafian follicle.
Explain the inheritance of hemophilia?
Name any three enzymes used in industry and explain their importance.
- Explain the principle on the basis of which DNA is separated by the technique of Gel electrophoresis.
- How is the separated DNA visualised?
Pollen grains are both useful and harmful. Justify the statement.