Immune System Quiz

What are antigens?

• Cells that produce antibodies

• Substances that trigger an immune response

• Types of immune system cells

• Hormones involved in immunity

Which of the following is a function of immune system cells?

• They act as antigens

• They produce hormones

• They defend the body against pathogens

• They store energy

What is humoral immunity primarily associated with?

• T cells

• B cells and antibodies

• Red blood cells

• Platelets

What types of molecules are found on the surface of cells?

• Proteins

• Polysaccharides

• Glycolipids

• Nucleic acids

What is the role of identifying "self" and "nonself" cells in the body?

• To produce energy

• To allow the body to distinguish between its own cells and foreign cells

• To transport nutrients

• To store genetic information

How does the immune system respond to foreign cells?

• By producing hormones

• By generating heat

• By producing antibodies that bind to and mark the foreign antigens

• By increasing blood pressure

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

• Recognize only one antigen

• Clonal selection, most are short-lived effector cells that fight infectious invaders

• Memory cells, are ready to respond if the same antigen reinvades the body

• Produce antibodies for all antigens

Where are MHC class I proteins found?

• On the surface of all cells that contain nuclei

• Only on red blood cells

• Only on cells of antigen-presenting cells and lymphocytes

• On the surface of bacteria

What happens when a B cell encounters an antigen that binds to its antigen receptors?

• The B cell dies

• The B cell becomes inactive

• The B cell reproduces rapidly

• The B cell changes into a T cell

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

• They produce antibodies

• They destroy antigens directly

• They act as antigen receptors

• They become memory cells