Immune System Quiz

What is a pathogen?

• A protein that acts against a specific antigen

• An organism that causes disease

• A substance prepared from killed or weakened pathogens

• A disease in which the immune system attacks the organism's own cells

What triggers the production of an antibody when introduced in the blood?

• Pathogen

• White blood cells

• Antigen

• Vaccine

What are lymph nodes responsible for?

• Creating antibodies

• Phagocytizing substances with foreign antigens

• Filtering out bacteria and other pathogens from blood plasma

• Determining blood type

What is the function of macrophages?

• To filter out bacteria and other pathogens from blood plasma

• To create antibodies

• To phagocytize substances with foreign antigens

• To determine blood type

What is the significance of blood type AB?

• RBC has no antigens therefore Anti-A and Anti-B antibodies are made

• RBC has A and B antigens therefore no antibodies are made

• Antigens on RBC determine blood type

• The immune system attacks the organism's own cells

What does blood type O indicate about the presence of antigens on RBC?

• RBC has A and B antigens therefore no antibodies are made

• RBC has no antigens therefore Anti-A and Anti-B antibodies are made

• Antigens on RBC determine blood type

• The immune system attacks the organism's own cells

Which types of blood can a person with blood type B receive?

• A) A and AB

• B) B and AB

• C) B and O

• D) O and A