Immune Response Concepts Assessment

The video explains the immune system's response to foreign substances, distinguishing between antigens that circulate freely and those displayed by self cells. It covers two immune responses: the humoral response, involving B cells and antibodies, and the cell-mediated response, involving T cells. The humoral response targets circulating antigens, while the cell-mediated response targets cells with aberrant MHC markers. The video details the processes of antigen binding, cell activation, and proliferation, highlighting the roles of interleukins, helper T cells, and memory cells in providing immunity.

What are the two main groups of foreign substances identified by the immune system?

• Viruses and bacteria

• Antigens and self cells with aberrant MHC proteins

• Pathogens and antibodies

• Antigens and antibodies

What is the role of B cells in the humoral immune response?

• To engulf pathogens

• To activate T cells

• To produce antibodies and memory cells

• To destroy infected cells

Which type of antigens do B cells recognize in the humoral response?

• Exogenous antigens

• Endogenous antigens

• MHC proteins

• Circulating antigens in body fluids

What is the function of plasma cells in the immune response?

• To produce antibodies

• To destroy pathogens

• To engulf antigens

• To activate T cells

What is the primary role of memory cells in the immune system?

• To provide immediate defense

• To remember past infections for future immunity

• To activate B cells

• To produce antibodies

Which cells are primarily involved in the cell-mediated immune response?

• B cells

• T cells

• Plasma cells

• Memory cells

What triggers the proliferation of cytotoxic T cells?

• Interleukins

• Antibodies

• MHC-II and exogenous antigens

• MHC-I and endogenous antigens

What is the role of helper T cells in the immune response?

• To engulf pathogens

• To produce antibodies

• To destroy infected cells

• To release interleukins and stimulate other immune cells

Which type of antigens are displayed on the plasma membrane to activate helper T cells?

• Endogenous antigens

• Exogenous antigens

• Circulating antigens

• MHC-I proteins

What is the role of interleukins in the immune response?

• To produce antibodies

• To stimulate B cells and other immune cells

• To destroy pathogens

• To activate memory cells