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

Foreign cells in the body carry foreign proteins that the body recognises as 'non-self'. These are called:

• Antibodies

• Antigens

• Red Blood Cells

• White Blood Cells

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

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

• fungi

• vaccine

• antigens

What function do memory cells have in our body?

• They help our immune system remember pathogens

• They store information in our short-term memory

• They send chemical signals from our blood to the brain

• All of the above

What is the term for a strong response to a harmless antigen in the environment?

• An allergy

• Cell-mediated immunity

• An autoimmune disease

• Inflammatory response

What is the body's first line (non-specific) of defense against infection by foreign organisms?

• antibodies

• lymph nodes

• white blood cells

• the skin