Question

1. What event triggers B cells to multiply?
2. What are the two types of B cells? What does each do?
3. What is/are the difference(s) between helper T cells and cytotoxic T cells in terms of how they fight the pathogen?

Answer 1

Ans- The interaction of the cells with the antigen causes the B cells to multiply. The binding of antigens to receptors on its cell surface leads to the activation and multiplication of B cells.

Ans- The two types of B cells are- Plasma B cells and Memory B cells.

Their functions-

a) Plasma B cells- These cells secrete antibodies which destroys the antigen by binding to these antibodies and performing phagocytosis to engulf those antigens.

b) Memory B cells- These cells are produced specific to the antigen which attacks. Such cells are known to respond quickly upon second exposure to the specific antigen.

Ans- The helper T cells activate B cells and cytotoxic T cells whereas the Cytotoxic T cells destroy antigens or pathogens through the process of phagocytosis. This is the major difference between helper T cells and cytotoxic T cells.