The Immune System

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

• Pathogen

• Antibodies

• B-cells

• Lymphocyte

This sticky fluid traps any pathogens that try and get in our body

• Mucous Lining

• Blood

• Stomach Acid

• Skin

What are two examples of chemical barriers?

• Lysozyme enzyme in our tears

• Skin

• White Blood Cells

• Stomach Acid

Which of the following is a type of white blood cell that will help to destroy pathogens which get past our physical barriers and chemical defences?

• bacterium

• antibody

• antigen

• 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