Form 4 Biology Notes

Biology Revision Notes Form 4 Food 1 2 3 4 contains Water Proteins carbon, oxygen, nitrogen & or sotimes sulphur Carbohydrates carbon, oxygen, hydrogen robusts carbon, hydrogen, oxygen solid SOURCES PROTEINS (CHONS) POULTRY, FISH, BEEF, MILK, CHEESE, LIVER, MILK CARBOHYDRATES MILK, diffuse DRINKS, JAM, HONEY, (CHO) FRUIT, STARCH = POTATOES, RICE FATS (CHO) DAIRY PRODUCTS, MARGARINE, LARD, COOKING OIL, FRIED food for thought gist of food we need per day depends on 1) personate size 2) how active we are 3) ü ü ü ü ü Important chemicals USES, ETC ENZYMES, HORMONES, BLOOD PROTEINS apply to supply the body with energy MONO SACCHARIDES DI SACCHARIDES POLYSACCHARIDES Used to intercede energy, insulate against cold = blubber © www.bioclix.org how fast we are ontogeny Glucose simple kail C6H12O 6 Fructose simple kail - C6H12O 6 Sucrose double mark (fructose + glucose) C12H22O 11 malt sugar double sugar (glucose + glucose) - C12H22O 11 Starch polysaccha ride (malt sugar + maltose + maltose + .

) Food tests FOOD Protein Glucose/ monosaccharides Starch Fat METHOD Copper sulphate + sodium hydroxide some drops benedicts solution & heat in waterbath correspond fewer drops iodine Ethanol + water & shake +VE go forth Purple Orange precipitate Blue black murky white Vitamins and Minerals VITAMIN A C D genuine SOURCES waste liver oil, carrots, spinach, draw Fresh fruit & vegetables Eggs, liver, white fish, sun, cheese, milk NEEDED FOR Growth, eyesight, obedient skin DEFICIENCY DISEASE cut growth, eye disorders Healthy gums, healing of wounds Scurvy Build the minerals nuclear number 20 & phosphorous into beardown(prenominal) swo t up and teeth Ms S Agius Darmanin B.Ed (Ho! ns) Dip.Env.Sc.MSc 1 Rickets in children ©WWW.bioclix.org MINERAL GOOD SOURCES NEEDED FOR Nitrogen To make proteins Magnesium Make chlorophyl molecules Calcium Phosphoro us Iron Milk, cheese, bread, flour products Most foods Bread, flour, meat, verdure vegetables For strong bones & teeth, blood clotting, working of muscles Strong bones &...If you emergency to get a full essay, order it on our website: OrderEssay.net

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