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GK MCQs Section
Q. Consider the following statements:
  1. Most antigens are proteins or lipids
  2. Lipids can function as antigens only when combined with proteins or polysaccharides
  3. Most vaccines contain antigens
Which of the above statements are correct?
Answer: 2 and 3 only
Notes: Most antigens are proteins or polysaccharides, not lipids. Lipids generally act as antigens only when conjugated with proteins or polysaccharides. Most vaccines contain antigens to elicit an immune response. Therefore, only statements 2 and 3 are correct, while statement 1 is inaccurate regarding types of antigens.
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