Biological molecules, A level, (Salters-Nuffield, Pearson Edexcel) 0.0 / 5 ? BiologyBiological molecules, organic chemistry and biochemistryA2/A-levelEdexcel Created by: RubberduckieCreated on: 20-04-19 18:16 How many carbon atoms does glucose have? 6 1 of 24 Is glucose soluble in water? Yes 2 of 24 Is glucose a large or small molecule Small 3 of 24 Which monosaccharides make up maltose? Two alpha-glucose molecules 4 of 24 Which monosaccharides make up lactose? One galactose molecule and one beta-glucose molecule 5 of 24 Which monosaccharides make up sucrose? One alpha-glucose molecule and one fructose molecule 6 of 24 How are disaccharides made? When two monosaccharides join in a condensation reaction 7 of 24 What is released when two monosaccharides bond to form a disaccharide? Water 8 of 24 What bond is formed when two monosaccharides join? A glycosidic bond 9 of 24 What is amylose? A polysaccharide made up of alpha-glucose monomers with alpha 1,4 glycosidic bonds 10 of 24 What is amylopectin? A polysaccharide made up of alpha glucose monomers joined with alpha 1,4 and alpha 1,6 glycosidic bonds 11 of 24 Which has more branches, amylopectin, amylose, or glycogen? Glycogen 12 of 24 {X}'s coiled shape makes it compact, so it can store lots of glucose and therefore energy in a small space Starch 13 of 24 {X} has many branches, and so can release glucose very fast, which is needed in animals Glycogen 14 of 24 {X} is insoluble, so does not exert a problematic osmotic effect Starch 15 of 24 What are triglycerides made up of? Three fatty acids and a glycerol joined by ester bonds 16 of 24 What is the difference between saturated fatty acids and unsaturated fatty acids? Unsaturated fatty acids have some double bonds between carbon atoms, whilst saturated fatty acids have none 17 of 24 Which molecules have kinks in their chain? Unsaturated do, saturated don't 18 of 24 What are LDLs formed from? Saturated fats, protein, and cholesterol 19 of 24 What do HDLs do? They transport cholesterol from the body tissues to the liver where it is broken down 20 of 24 When two amino acids join together to form a dipeptide, what bond is created? A peptide bond 21 of 24 What molecules make up an amino group? NH2 22 of 24 What molecules make up a carboxyl group? COOH 23 of 24 In what kind of reaction do two amino acids join together to form a dipeptide? A condensation reaction in which water is lost 24 of 24
Comments
No comments have yet been made