pathogens 0.0 / 5 ? BiologyHealth, illness and diseaseASAQA Created by: bethany cracknellCreated on: 02-05-13 10:38 pathogens micro-organisms that causes disease 1 of 23 examples of pathogens bacteria- salmonella; parasites-malaria, fungi- athletes foot; virus- HIV 2 of 23 disease physical or mental symptoms from a micro-organism 3 of 23 features gains entry to host; colonises tissue to host; resists defenses of host; causes damage to hosts tissues 4 of 23 Interfaces penetrates interfaces with environment surface linking 2 systems- external to internal 5 of 23 gas exchange influenza, TB, bronchitis; air-alveoli-invades cells 6 of 23 digestive cholera, thyploid- food and water 7 of 23 skin enters bloodstream 8 of 23 toxins harmful molecules released in to body 9 of 23 example of toxin bacterium that causes tetanus, produces toxins that blocks function of nerve cells 10 of 23 cell damage rupture- release nutrients- break down nutrients-replicate-burst cell 11 of 23 mucous difficult to penetrate as has a sticky barrier 12 of 23 enzymes break down pathogens 13 of 23 stomach acid kills micro-organisms 14 of 23 coronary heart disease high blood pressure damages heart and blood vessels 15 of 23 cancer uncontrolled cell division 16 of 23 metastatis tumour cells that spread 17 of 23 carcinogens mutates DNA 18 of 23 genetic lose or gain electons through errors in mitosis- changes in nucleotide sequqnece in DNA 19 of 23 risk measure of probablity of damage; relative 20 of 23 risk factors smoking, diet, obesity, sunlight 21 of 23 correlation change in one variable is reflected by a change in variable two 22 of 23 causation one factor affects and causes another- repetition, method, bias, sample size 23 of 23
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