Question map
Not attempted Correct Incorrect ★ Bookmarked
Loading…
Q128 (IAS/2001) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Microbiology and immunity Answer Verified

Antigen is a substance which

Result
Your answer: —  ·  Correct: D
Explanation

An antigen is any molecule or substance that can be recognised by the immune system and provoke an immune response; specifically, antigens stimulate lymphocytes (B cells) to produce antibodies tailored to that antigen [3]. Educational and clinical sources describe antigens as “antibody generators” because exposure to an antigen leads to production of specific antibodies which bind the antigen and mark it for destruction or neutralization by the immune system [2]. Vaccines use harmless antigenic parts of germs to train the immune system to form antibodies without causing disease, illustrating the antigen’s role in stimulating antibody formation [2].

Sources

  1. [1] https://egyankosh.ac.in/bitstream/123456789/101521/1/Unit-3.pdf
  2. [3] https://www.britannica.com/science/antigen
How others answered
Each bar shows the % of students who chose that option. Green bar = correct answer, blue outline = your choice.
Community Performance
Out of everyone who attempted this question.
75%
got it right
✓ Thank you! We'll review this.

SIMILAR QUESTIONS

IAS · 1997 · Q129 Relevance score: 7.05

Antigen is a substance which

CAPF · 2016 · Q12 Relevance score: -3.90

Vaccination involves:

CAPF · 2017 · Q106 Relevance score: -3.94

The term Biomagnifications is referred to as

CDS-I · 2013 · Q63 Relevance score: -5.13

Consider the following statements regarding antibiotics: 1, They are used to destroy disease causing bacteria. 2. They can be applied to the skin, swallowed or injected to fight micro-organisms inside the body, 3. They are effective against disease-causing viruses. 4. The first antibiotic to be discovered was tetracycline. Which of the statements given above is/are correct ?

IAS · 2025 · Q48 Relevance score: -5.37

With reference to monoclonal antibodies, often mentioned in news, consider the following statements : I. They are man-made proteins. II. They stimulate immunological function due to their ability to bind to specific antigens. III. They are used in treating viral infections like that of Nipah virus. Which of the statements given above are correct?