Humoral Immunity and Immune Response

The video tutorial covers humoral immunity, focusing on the roles of B cells, plasma cells, and memory cells in the immune response. It explains how B cells respond to antigens, the role of T helper cells in stimulating B cells, and the process of clonal selection leading to monoclonal antibodies. The differences between primary and secondary immune responses are highlighted, emphasizing the roles of plasma and memory cells. The tutorial concludes with a diagram explanation and a student activity to reinforce learning.

What is the primary focus of humoral immunity?

• Regulation of body temperature

• Production of antibodies

• Activation of T cells

• Destruction of red blood cells

What is the role of B cells in humoral immunity?

• To activate T cells

• To produce antibodies specific to antigens

• To regulate blood pressure

• To destroy pathogens directly

What is the role of antibodies in the immune response?

• To regulate body temperature

• To bind to antigens and form a complex

• To destroy red blood cells

• To produce hormones

How do T helper cells assist B cells?

• By stimulating them to divide by mitosis

• By producing antibodies

• By regulating body temperature

• By directly attacking pathogens

What process allows B cells to produce identical cells?

• Respiration

• Meiosis

• Mitosis

• Photosynthesis

What is the significance of clonal selection in humoral immunity?

• It produces red blood cells

• It regulates blood pressure

• It destroys all pathogens

• It ensures the production of antibodies specific to a particular antigen

What is the main difference between plasma cells and memory cells?

• Plasma cells attack pathogens directly, while memory cells do not

• Plasma cells secrete antibodies immediately, while memory cells provide long-term immunity

• Plasma cells regulate blood pressure, while memory cells do not

• Plasma cells are involved in cellular immunity, while memory cells are not

Which cells are primarily involved in the secondary immune response?

• Plasma cells

• Red blood cells

• Neurons

• Memory cells

What happens during the primary immune response?

• Pathogens are ignored by the immune system

• Antibodies are not produced

• Memory cells are activated immediately

• Plasma cells produce antibodies for the first time

How do memory cells respond to a second exposure to the same antigen?

• They rapidly divide and produce more antibodies

• They attack the antigen directly

• They produce fewer antibodies

• They ignore the antigen