The Immune System

Which of the following is the name for a micro-organism that can cause disease?

• Pathogen

• Antibodies

• B-cells

• Lymphocyte

What is the molecule located on the outside of a pathogen that the immune system recognizes?

• Lymphocyte

• Antigen

• Pathogen

• Inflammation

What attaches to antigens and tags the pathogen for destruction?

• Pathogen

• Antibodies

• B-cells

• Lymphocyte

What do memory lymphocytes do?

• Kills the virus

• Eats the virus

• Patrol the area and make the immune system work faster next time.

• Makes antibodies

A(n) ________ is a substance that causes an immune response. It can be on the surface of a pathogen.

• antigen

• antibodies

• B cells

• T cells

The body's ability to destroy pathogens before they can cause disease is called:

• Tolerance

• Immunity

• Vaccine

• Inflammatory response

Proteins called _______ can attach to the antigen and make it useless.

• antigen

• antibodies

• B cells

• T cells

The diagram shows a lymphocyte. What is the arrow pointing to on the surface of the lymphocyte?

• molecules called antigens

• molecules called antibodies

What is a preparation of dead or weakened pathogens that is introduced into the body to cause an immune response?

• fungi

• vaccine

• antigens

When we have a vaccine which of the following happens?

• lymphocytes in the body are destroyed by the vaccine

• the weakened pathogen in the vaccine causes us to become ill

• lymphocytes in the body are activated and memory lymphocytes are produced

• lymphocytes in the body quickly produce antibodies