Immune System Defense Mechanisms Quiz

What is the primary role of the skin in the immune system?

• To present antigens

• To produce antibodies

• To act as a physical barrier

• To destroy infected cells

Which of the following is a chemical involved in the inflammatory response?

• Histamine

• MHC antigens

• Antibodies

• Perforin

What is the role of antigen-presenting cells in the immune system?

• To produce antibodies

• To present antigens to T cells

• To destroy pathogens directly

• To secrete histamine

How do B cells respond when they detect a foreign antigen?

• They produce histamine

• They clone themselves and produce antibodies

• They secrete perforin

• They present antigens to T cells

What is the function of memory B cells?

• To produce histamine

• To remember antigens for future attacks

• To present antigens to T cells

• To secrete perforin

What is the main role of killer T cells in the immune response?

• To secrete histamine

• To destroy infected cells

• To present antigens

• To produce antibodies

How do helper T cells activate killer T cells?

• By secreting antibodies

• By releasing interleukin

• By producing histamine

• By presenting antigens

What is the role of MHC antigens in the immune system?

• To act as a physical barrier

• To secrete histamine

• To produce antibodies

• To present a real-time update of the cell's status

What is the difference between humoral and cell-mediated responses?

• Humoral response involves physical barriers, while cell-mediated response involves inflammation

• Humoral response involves MHC antigens, while cell-mediated response involves antibodies

• Humoral response involves histamine, while cell-mediated response involves perforin

• Humoral response involves antibodies, while cell-mediated response involves killer T cells

What is the function of perforin in the immune response?

• To produce antibodies

• To puncture cell membranes of infected cells

• To present antigens

• To secrete histamine