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Questions and Answers
How many antibodies does IgA have, and how many antigen-binding sites does it have?
How many antibodies does IgA have, and how many antigen-binding sites does it have?
- 1 antibody, 2 antigen-binding sites
- 2 antibodies, 4 antigen-binding sites (correct)
- 2 antibodies, 2 antigen-binding sites
- 1 antibody, 4 antigen-binding sites
What is the function of J chain in secretory IgA synthesis and transport?
What is the function of J chain in secretory IgA synthesis and transport?
- Binding to IgA in plasma cells (correct)
- Secreting IgA at the lateral surface of epithelial cells
- Polymerizing in the basal surface of epithelium
- Transporting IgA across epithelial cells
Which function is unique to sIgA compared to IgG?
Which function is unique to sIgA compared to IgG?
- Enzyme and toxin neutralisation
- Immune exclusion (correct)
- Virus neutralisation
- Inhibition of adherence
What is a function carried out only by IgG, not by sIgA?
What is a function carried out only by IgG, not by sIgA?
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What do mucosal T cells help maintain?
What do mucosal T cells help maintain?
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Which two factors play key roles in regulating T cell responses?
Which two factors play key roles in regulating T cell responses?
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What is the purpose of oral tolerance?
What is the purpose of oral tolerance?
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