B Cell Function and Immune Response

The video tutorial explains the role of B cells in the humoral immune response, highlighting their function in recognizing antigens and producing antibodies. It discusses the consequences of losing B cell activity, such as the absence of antibody production and slower immune responses upon initial and secondary exposures to pathogens. Despite the loss of B cells, other immune responses like cell-mediated immunity and physical barriers like skin remain functional.

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

• To produce antibodies

• To engulf pathogens

• To act as a physical barrier

• To produce hormones

Which cells are responsible for recognizing antigens and initiating an immune response?

• Phagocytes

• B cells

• Skin cells

• T cells

What happens when B cells lose their ability to function?

• The skin becomes more protective

• The humoral immune response is compromised

• The body produces more antibodies

• The body produces more T cells

What is a direct consequence of losing B cell activity during the initial exposure to a pathogen?

• Increased memory cell production

• No tagging of antigens for cleanup

• Faster immune response

• Increased antibody production

How does the loss of B cells affect the immune response to a second exposure to the same pathogen?

• The skin becomes more protective

• The response is slower and less effective

• The response is faster

• More antibodies are produced

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

• To produce hormones

• To engulf pathogens

• To act as a physical barrier

• To ensure a faster response upon re-exposure

Which part of the immune system remains unaffected by the loss of B cells?

• Cell-mediated immune response

• Antibody production

• Memory B cell production

• Humoral immune response

What is the function of phagocytes in the immune system?

• To produce hormones

• To engulf and destroy pathogens

• To act as a physical barrier

• To produce antibodies

Which of the following is a characteristic of the cell-mediated immune response?

• Production of antibodies

• Engulfing pathogens

• Memory cell production

• Hormone secretion

What role does the skin play in the immune system?

• It produces antibodies

• It acts as a physical barrier

• It produces hormones

• It engulfs pathogens