Immune System

Any organism that causes disease like a virus or bacteria is called:

• Antibiotics

• Antibody

• Pathogen

• Phagocyte

A molecule that the immune system recognizes either as part of the body or as coming from outside the body:

• Antigen

• Antibodies

• Antibiotics

• Antipaths

A protein produced by B cells of the immune system that destroys pathogens is called:

• Antigens

• Antibodies

• T-cells

• Lymphocytes

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

• Tolerance

• Immunity

• Vaccine

• Inflammatory response

Which of the following is a way to spread infectious diseases?

• Touching contaminated objects

• Not washing hands regularly

• Being near infected people

• All of these are ways

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

When the body encounters a pathogen, antibodies are created that are specific to that pathogen. The next time the body encounters the pathogen, the response will be:

• Slower

• Faster

The diagram shows a pathogen, what is the arrow pointing to on the surface of the pathogen?

• a molecule called an antigen

• a molecule called an antibody

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

• fungi

• vaccine

• antigens