MCQ
Assertion $(A)$ : Antigen can be easily recognized because it has antigenic determinants.

Reason $(R)$ : The recognition ability is innate.

  • A
    If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
  • If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
  • C
    If the Assertion is correct but Reason is incorrect.
  • D
    If both the Assertion and Reason are incorrect.

Answer

Correct option: B.
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
b
Antigen is a substance that when introduced in the body, stimulate the production of antibody. They are mostly proteins but may be carbohydrates, lipids, nucleic acids etc. One antigen can bind with many antibodies. Every antigen has many antigenic determinants called epitopes. The recognition ability of antibody is innate and develops without exposure to the antigen.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Match the correct
Column $- I$ Column $- II$
$(1)$ Baculo Virus $(a)$ Bacillus thuringiancis
$(2)$ Trichoderma polysporum $(b)$ Monoscus purpureus
$(3)$ Statins $(c)$ Cyclosporin$- A$
$(4)$ $BT$ Cotton $(d)$ Nucleopolyhedro
$(e)$ Saccaromyacis sariviceae
Statement I: Macrophages, leucocytes and microfilaments show amoeboid movement.
Statement II: Locomotion requires a perfect co - ordinated activity of muscular & neural systems only.
Which is incorrect pair on basis of its role in immune system?
Two allelic genes are located on
When the thyroid secretion is too much, the gland itself gets enlarged, conversely, if the secretion is too little, the gland gets
Kidney stones are produced due to deposition of uric acid and
Uncontrolled and undifferentiated mass of cells is known as
Ovulation occurs on the __________ day of menstrual cycle.
Given is : $X$ is the chromosome with gene for haemophilia and $X$ is the chromosome with normal gene. Which of the following individuals will act as carrier for haemophilia
Mechanisms of breathing vary among different groups of animals depending mainly on their habitats and levels of organisation, which option contain all correct statements ?
(i) Lower invertebrates like sponges, coelenterates, flatworms, etc., exchange O2 with CO2 by simple diffusion over their entire body surface.
(ii) Earthworms use their moist cuticle for exchange O2 with CO2.
(iii) Insects have tracheal tubes to transport atmospheric air within the body.
(iv) Special vascularised structures called gills are used by most of the aquatic arthropods and molluscs.
(v) Terrestrial forms use vascularised bags called lungs for the exchange of gases.
(vi) Among vertebrates, fishes use gills whereas reptiles, birds and mammals respire through lungs and also use skin for respiration.