B cells

Question 1

What is the shape of B cells

Answer 1

Y shaped with two identical heavy and light chains

Question 2

Antigen presentation

Answer 2

When MHC molecules bind and transport the antigen fragments to the cell surface

Question 3

The central role of helper T cells in humoral and cell mediated immune response

Answer 3

1. Antigen presenting cell engulfs a pathogen, degrades it and display antigen fragments with class 2 MHC molecules on the cell surface. A specific helper T cells binds to this

Question 4

Part 2 The central role of helper T cells in humoral and cell mediated immune response

Answer 4

Binding of the helper T cells promotes secretion of cytokines by the antigen presenting dendritic cell. These cyyokines along with cytokines from the helper T cell itself activates the helper T cell

Question 5

Cell proliferation produces a clone of activated T cells. All cells on the clone have receptors from the same pathogen