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Science Explosion 16
BJU 6th Science - Chapter 15
| Question | Answer |
|---|---|
| communicable | contagious |
| non communicable | non contagious |
| pathogen | anything that causes a disease |
| vector | insect or animal that carries a pathogen |
| epidemic | when a disease spreads to a large number of people in a short time |
| airborne pathogen | spreads through the air |
| contact | spread by touch |
| food-borne | contamination by food |
| water-borne | contamination by water |
| epidemiologist | scientist who studies cause and spread of disease in communities |
| defensive barrier | helps keep pathogens out of body (like skin) |
| cilia | tiny hair-like projections that line air passages |
| inflammatory response | non-specific defense (swelling, pain, redness) |
| immune response | specific defense (lymph, white blood cells) |
| antibody | special proteins that can destroy pathogens |
| memory cell | white blood cells (WBCs) that remember the "enemy" |
| immunity | special protection against disease |
| vaccine | shot that contains dead or weakened pathogens |
| antibiotic | chemical that can destroy bacteria |
| allergen | anything that causes the immune system to have an allergic reaction |
| autoimmune disease | when immune system attacks own healthy cells |