Question:
Assertion (A) : ELISA is based on the principle of antigen antibody interaction.
Reason (R) : ELISA can detect the proteins/glycoproteins only when present in high concentration.
Assertion (A) : ELISA is based on the principle of antigen antibody interaction.
Reason (R) : ELISA can detect the proteins/glycoproteins only when present in high concentration.
Show Hint
ELISA uses antigen-antibody binding and detects even tiny amounts, so R is false.
Updated On: Oct 23, 2026
- Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
- Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
- Assertion (A) is true, but Reason (R) is false.
- Assertion (A) is false, but Reason (R) is true.
Show Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Check the Assertion:
ELISA means enzyme linked immunosorbent assay. It works on the binding of an antigen to its specific antibody. The bound complex is shown by an enzyme that gives a colour. So (A) is true.
Step 2: Check the Reason:
ELISA is a very sensitive test. It can detect proteins or glycoproteins even in very small amounts, for example in the early stage of an infection such as HIV or in a pregnancy test.
So the claim that it works only at high concentration is false.
Final Answer:
(A) is true and (R) is false, so option (C).
ELISA means enzyme linked immunosorbent assay. It works on the binding of an antigen to its specific antibody. The bound complex is shown by an enzyme that gives a colour. So (A) is true.
Step 2: Check the Reason:
ELISA is a very sensitive test. It can detect proteins or glycoproteins even in very small amounts, for example in the early stage of an infection such as HIV or in a pregnancy test.
So the claim that it works only at high concentration is false.
Final Answer:
(A) is true and (R) is false, so option (C).
Was this answer helpful?
0
0
Top CBSE CLASS XII Biology Questions
- All algae have
- With a neat, labelled diagram, describe the parts of a typical angiosperm ovule.
- With a neat diagram explain the 7-celled, 8-nucleate nature of the female gametophyte
- Draw a labeled diagram of male reproductive system.
- Draw a labeled diagram of female reproductive system.
View More Questions
Top CBSE CLASS XII Applications of Biotechnology Questions
- Diagrammatically represent the experimental steps in cloning and expressing an human gene (say the gene for growth hormone) into a bacterium like E. coli?
- What are transgenic bacteria? Illustrate using any one example.
- Crystals of Bt toxin produced by some bacteria do not kill the bacteria themselves because -
- Compare and contrast the advantages and disadvantages of production of genetically modified crops.
- What is gene therapy? Illustrate using the example of adenosine deaminase (ADA) deficiency.
View More Questions
Top CBSE CLASS XII Questions
- 2, b, c are in A.P. and the range of determinant $\begin{vmatrix}1&1&1\\ 2&b&c\\ 4&b^{2}&c^{2}\end{vmatrix}$ is [2, 16]. Then find range of c is
- A boy of mass 50 kg is standing at one end of a, boat of length 9 m and mass 400 kg. He runs to the other, end. The distance through which the centre of mass of the boat boy system moves is
- A capillary tube of radius r is dipped inside a large vessel of water. The mass of water raised above water level is M. If the radius of capillary is doubled, the mass of water inside capillary will be
- A circular disc is rotating about its own axis. An external opposing torque 0.02 Nm is applied on the disc by which it comes rest in 5 seconds. The initial angular momentum of disc is
- A circular disc is rotating about its own axis at uniform angular velocity \(\omega.\) The disc is subjected to uniform angular retardation by which its angular velocity is decreased to \(\frac {\omega}{2}\) during 120 rotations. The number of rotations further made by it before coming to rest is
View More Questions