Immunity

Disease causing agents such as bacteria and viruses are called _______________.

• pathogens

• antibodies

• villians

• particles

What is the primary function of your immune system?

• to create organelles

• to protect your body from pathogens

• to aid in blood circulation

• to protect your bones and muscles

First line defenses include

• skin

• hair

• mucus

• all of the above

The blood cells that fight pathogens.

• White blood cells
• Red blood cells
• Plasma
• Hemoglobin

Which best describes the relationship between antibodies and antigens?

• Antibodies are specific to one antigen
• Antigens are produced in response to antibodies
• One antibody can affect several different antigens
• Immunity develops when an antigen destroys an antibody.

Antibodies are specific (acts on) one

• Antigen
• white blood cell
•  red blood cells
•  virus