An organism, virus, or a protein that causes disease.

• bacteria

• pathogen

• amoeba

• worm

Select your body's external defenses.

• skin

• inflammation

• hair

• saliva

• mucus

Select your body's internal defenses.

• inflammation

• mucus

• platelets

• saliva

• fever

Specialized white blood cells that recognize and attack foreign substances in the body are part of the

• immune system

• circulatory system

• cardiovascular system

• respiratory system

A white blood cell that destroys pathogens by engulfing and destroying them is called a(n)

• microphage

• macrophage

• T-cells

• B-cells

Tags

NGSS.MS-LS1-3

The immune system consists of mainly what type of cells?

• T-cells and D-cells

• B-cells and C-cells

• M-cells and T-cells

• T-cells and B-cells

Tags

NGSS.MS-LS1-3

A specialized protein that binds to a specific antigen to tag it for destruction is a pathogen.

• True

• False

Which of the following can challenge your immune system?

• Allergies

• Cancer

• Immune Deficiency

• Auto-immune Disease

• All of the above

Diseases that are caused by hereditary or environmental factors are

• infectious

• noninfectious

A disease that is caused by a pathogen is

• infectious

• noninfectious