Year 6 Science 1.4 Disease

part of the body's most basic defense mechanisms.

the ability of higher organisms to identify and combat potentially harmful microorganism

an organism that is infected with or is fed upon by a parasitic or pathogenic organism

refers to behaviors that can improve cleanliness and lead to good health

Viscous fluid that moistens, lubricates , and protects many of the passages of the digestive and respiratory tracts in the body

an organism that lives on or in a host organism and gets its food from or at the expense of its host

An agent or a method that wards off

a living organism that transmits an infectious agent from an infected animal to a human or another animal

( ) contain a chemical substances that kills some bacteria

( ) in the nose, windpipe and other air passages is stick and traps other germs