All cells and virus particles have molecules on their outer surface called ________

What is the name of white blood cells that have molecules on their surface to fit an antigen?

• memory cells

• lymphocytes

• red blood cells

• fighter white blood cells

Lymphocytes have what on their surface?

• antigens

• antibodies

• memory cells

Lymphocytes that remain in the blood are known as ______ lymphocytes

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

• antigen

• antibodies

• B cells

• T cells

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

Which cells produce antibodies to pathogens?

• Red blood cells

• Bacteria

• lymphocytes

• phagocytes

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

• molecules called antigens

• molecules called antibodies