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Biology revision notes. Microorganisms | lifestyle | Inheritance | Environment | FluTonsillitisSalmonellaCold Fungus | EnimicInfectionHIVAidsHypothermia | DiabeticHeart Disease InfectionArthritisDown-Syndrome | Swine FluCancerAmmoniaChicken poxExima | * 3 disease in London in the 1800: Malaria, Cholera, Typhus * Poor Sanitation, Street where dirty (unclean water and washing) * Closer you live to the pump the more houses were affected. * They catch the cholera by contact with other people. * Stopped the pump so no more water could come out. * To get rid of diseases improve the houses, improve sewers. * They are popular in some countries because they have no money to improve sation. . Fat * You need fat to give you energy. * Saturated and unsaturated. * Blood cholesterol can increase and risk the chance of heart disease. * Saturated: milk, butter, cheese. * Avoid fatty products: low fat products, semi skimmed milk, low fat cheese. * Have a lot of sugars in low fat. * Better fats: rapid oils. * Full fat lowers your blood cholesterol. * In omega 3 oily fish. * Hyperactive: cut across, won’t sleep, can’t concentrate, have tantrums. * Can take the colour and addictives out of the foods. * Fat removed from the whole milk. * Milk instead of orange juice: calcium, less sugar.
Energy in foods. * Thermometer, clamp, test-tube, Bunsen burner, food. * Two measurements you should take temperature of water before and after. * Mass needs to be measured also. * You can over tighten the clamp, tube breaks in pieces and brake your skin open. Don’t over tighten the tube. * Energy(J/G)=temperature rise x water volume x 4.2 food mass. * Heat from food lost, food doesn’t burn that well. More energy in the food before than after. Choice of how to…...

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