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Infectious Disease and Immunity
Quick questions on Antibodies and immunological memory: H2 Biology Infectious Disease and Immunity
4short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is antibody structure?Show answer
An antibody (immunoglobulin) is a globular protein with quaternary structure: four polypeptide chains (two heavy, two light) joined by disulfide bonds into a Y shape. The two tips of the Y are antigen-binding sites formed by variable regions whose shape differs between antibodies. The rest is the constant region.
What is q1?Show answer
State the type of protein structure shown by an antibody. [1 mark]
What is q2?Show answer
Explain why an antibody can bind only one type of antigen. [2 marks]
What is q3?Show answer
State two reasons the secondary immune response is more effective than the primary. [2 marks]
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