Gaugher disease--special enzyme missing glucocerebroside build up in organs Genetic engineering Changing the genetic material of an organism by removing, changing, or inserting individual genes Resistant to herbicide: Glyphosate Cotton plants containing Bt-toxic to insects Golden Rice (high Vitamin A content) Biotechnology: using living organisms to carry out processes that make substances that we want. yeast--alcohol and bread bacteria--yoghurt and cheese It is used widely in food industry and our daily life. Proteases break down the coloured, insoluble proteins that cause stains to smaller, colourless soluble polypeptides. haemoglobin----------------smaller molecules ( red colour) (colourless) (Insoluble protein) (soluble) Pectinase break down pectin and enable greater juice extraction, make clear juice rather than cloudy. Lactase breaks down lactose in milk into glucose and galactose. This makes milk drinkable for lactose intolerant people. Lactose-intolerant individuals may tolerate yogurt due to the fermentation of lactose to lactic acid carried out by the bacteria present in the yogurt. Isomerase was used in converting glucose which is not very sweet to fructose, the most sweet of the natural sugars.