Define Antigen and Antibody. Name any tw | Class 12 Biology Chapter Biotechnology and its Application, Biotechnology and its Application NCERT Solutions

Current NCERT chapter

Academic session 2026-27, Chapter 10 in the current curriculum.

Welcome to the NCERT Solutions for Class 12 Biology - Chapter Biotechnology and its Application. This page offers a step-by-step solution to the specific question from Exercise 0, Question 9:

Define Antigen and Antibody. Name any two diagnostic kits based upon them.

. With detailed answers and explanations for each chapter, students can strengthen their understanding and prepare confidently for exams. Ideal for CBSE and other board students, this resource will simplify your study experience.

Question 9:

Define Antigen and Antibody. Name any two diagnostic kits based upon them.

Answer:

Adaptive immune response which arises as a result of exposure to foreign compounds and the compound which evokes the response is known as antigen; these compounds have the ability to cause antibody response generation.

 Antibodies are the antigen- binding glycoproteins which are synthesized by B- cells in the various forms, each having a different amino acid sequence and a different antigen binding site, is called as Immunoglobulins (Ig).

Two diagnostic test that based upon antigen- antibody relationship are:

  1. ELISA for AIDS (the blood sample is taken to the cassette which contains viral proteins, called antigens; if the blood contains antibodies to HIV and then when it will bind to the antigen, the cassette’s content will change its colour).
  2. Pregnancy test (monoclonal antibodies are present at the end of the pregnancy test kit onto which the woman urinate). If the lady is pregnant then HCG will be present in the urine which will cause change in colour or pattern which indicate pregnancy).


Study Tips for Answering NCERT Questions:

NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:

  • Read the question carefully and focus on the core concept being asked.
  • Reference examples and data from the chapter when answering questions about Biotechnology and its Application.
  • Review previous year question papers to get an idea of how such questions may be framed in exams.
  • Practice answering questions within the time limit to improve your speed and accuracy.
  • Discuss your answers with your teachers or peers to get feedback and improve your understanding.

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Welcome to the NCERT Solutions for Class 12 Biology - Chapter . This page offers a step-by-step solution to the specific question from Excercise 0 , Question 9: Define Antigen and Antibody. Name any two diagnostic kits based upon them.....

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