FREE LST Antigen Questions and Answers

Question 1

What is the primary function of lymphocytes in the immune system?

Accepted Answer

Fight infections and provide immunity

Answer

Lymphocytes are a type of white blood cell that plays a critical role in the immune response by fighting infections and providing immunity.

Question 2

What are the main types of lymphocytes involved in antigen recognition?

Accepted Answer

T cells and B cells

Answer

T cells and B cells are the primary lymphocytes involved in antigen recognition and immune response.

Question 3

What molecule on the surface of B cells is responsible for antigen recognition?

Accepted Answer

B cell receptor (BCR)

Answer

The B cell receptor (BCR) on the surface of B cells binds to specific antigens, initiating the immune response.

Question 4

What is the role of T cell receptors (TCRs) in antigen recognition?

Accepted Answer

They bind to antigens presented by MHC molecules on antigen-presenting cells

Answer

T cell receptors (TCRs) on T cells recognize and bind to antigens presented by MHC molecules on the surface of antigen-presenting cells.

Question 5

Which type of MHC molecule presents endogenous antigens to CD8+ T cells?

Accepted Answer

MHC class I

Answer

MHC class I molecules present endogenous antigens (from within the cell) to CD8+ cytotoxic T cells.

LST - Lymphocyte Stimulation Test Practice Test