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Antibody molecules

  • A.Are globular proteins found predominantly in the gamma region during electrophoresis
  • B.Recognise carbohydrates via a lectin head
  • C.Are produced by T cells
  • D.Use the Fc region to bind antigen

Answer: A

Correct answer: Are globular proteins found predominantly in the gamma region during electrophoresis

Antibodies are globular glycoproteins that migrate mainly in the gamma fraction on serum electrophoresis, which is the origin of the name gamma globulin. The other options each misplace a fact: lectin heads belong to collectins such as mannose-binding lectin, plasma cells derived from B cells produce antibody, and it is the Fab region rather than the Fc that binds antigen.

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