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Biology
Disease, defence and treatment
| Question | Answer |
|---|---|
| what is a pathogen? | A microbe that causes disease |
| What are the 3 barriers of defence against pathogens? | external barriers e.g. skin Platelets (in the blood) clots the blood, forms a scab White blood cells |
| What are the two white blood cells? | phagocytes and lymphocytes |
| What is a vaccine? | A preparation that can protect against disease, a dead or weakened form of a pathogen that makes your body produces anti-bodies, so in the future your immune system will respond faster |
| Does a bacteria cell have a distinct nucleus? | no |
| How do micro-organisms cause disease, name the methods | Contact, Aerosol, body fluids, water, insects, contaminated food |
| What disease is commonly spread by mosquitoes? | malaria |
| What is the name of the disease that usually spreads by water? | cholera |
| what are antibiotics? | drugs that kill bacteria (or prevent their growth)) without harming your cells |
Created by:
willum