STD 12 - 7. human health and disease — Biology STD 12 Science — Question
CBSE BoardEnglish MediumSTD 12 ScienceBiologySTD 12 - 7. human health and disease1 Mark
MCQ
Immunoglobulins are made up of
A
Two polypeptide chains
✓
Four polypeptide chains
C
Three amino acids only
D
Five nucleotides
✓
Answer
Correct option: B.
Four polypeptide chains
b Immunoglobulins are present in serum and provide immunity to body against diseases. Each immunoglobulin is made up of four polypeptide chains-two heavy weight chains and two light weight chains. These chains are joined to each other by disulphide bonds.
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