Enzymes in Digestion 0.0 / 5 ? BiologyEnzymes and digestionGCSEAQA Created by: SLowtherCreated on: 16-01-17 17:03 Where is bile made and stored? Made in the liver and stored in the gall bladder. 1 of 12 Is bile an enzyme? No 2 of 12 Describe one of the roles of bile in digestion Neutralises the acid from the stomach and provided alkaline conditions in the small intestine 3 of 12 Describe another role of bile Emulsifies fats in food. This increases the surface area of the fats/lipids for lipase to work on. 4 of 12 What is protease used for? To pre-digest proteins during the manufacture of baby foods 5 of 12 What is lipase used for? Used with protease in biological detergents to break down the substances in stains into smaller water soluble substances. 6 of 12 What is the use of carbohydrase? To convert starch syrup which is cheap into sugar syrup which is more valuable and used in sports drinks 7 of 12 What is isomerase used for? To convert glucose syrup into fructose syrup which is much sweeter and can be used in smaller amounts in slimming foods 8 of 12 Why are enzymes used in industry? Enzymes catalyse reactions at relatively low temperatures and pressures so need little energy so are fairly cheap to run. 9 of 12 Why do enzymes work at low temperatures? Enzymes lower activation energy so less energy is needed for a reaction to proceed. 10 of 12 What is a disadvantage of enzymes? Enzymes are denatured at high temperatures so this needs to be kept low and the pH must be carefully controlled. 11 of 12 What are four uses of proteins? 1. Catalysts 2. Hormones 3. Antibodies 4. Structural components 12 of 12
Comments
No comments have yet been made