Which of these is a class of antibody?
AATP
BRBC
CIgG
DDNA
Answer & Solution
Correct answer: C. IgG
1. An antibody molecule is made of four peptide chains, two light and two heavy.
2. Antibodies occur in several classes, distinguished by their heavy chains.
3. IgA, IgM and IgG are among the classes named here.
4. The others listed are not immunoglobulins at all.
_Source: NCERT Class 12 Biology Ch7 'Human Health and Disease', section 7.2.2_
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