6 Science ch. 15

What happens to Ryans body when he has an allergic reaction? His ___ tries to ___ the ___ as if they were ___.

Answer explanation

His body tries to destroy the allergens as if they were pathogens.

Every spring when tree pollen is in the air, Ryan gets a stuffy nose and watery eyes. He also sneezes a lot during that time. Does he have a contagious disease?

common pathogens that cause diseases such as strep throat

• vectors
• viruses
• protozoans
• epidemic
• bacteria

occurs when a disease spreads to many people in a short period of time

• protozoans
• epidemic
• viruses
• fungi
• bacteria

pathogens that cause disease such as athlete's foot

• bacteria
• protozoans
• vectors
• fungi
• viruses

largest known pathogens

• fungi
• viruses
• epidemic
• bacteria
• protozoans

nonliving pathogens

• viruses
• protozoans
• vectors
• epidemic
• bacteria

insects or other animals that carry pathogens

• epidemic
• fungi
• vectors
• bacteria
• protozoans

a type of white blood cell that remembers a pathogen and the specific antibody needed to defeat it

• immune response
• lymph
• immunity
• memory cells
• inflammatory response

the body's specific defense

• lymph
• inflammatory response
• immune response
• memory cells
• immunity