Aqa A Level Biology Year 1 Foundations Of Life, Cell

AQA A LEVEL BIOLOGY YEAR 1 - FOUNDATIONS OF LIFE, CELLS TO ECOSYSTEMS! AQA A Level Biology Year 1 What are monomers of carbohydrates called? Monosaccharides. Beta Glucose Alpha glucose Glucose formula CHO Name of the bond between monosaccharides? Glycosidic bond. What is sucrose made from? Glucose and fructose. What is lactose made from? Glucose and galactose. What is maltose made from?Two alpha glucose. Testing for reducing sugars? Add Benedict's reagent (blue) and heat in a water bath. If present: Green yellow orange brick red Test for non-reducing sugars? Add dilute hydrochloric acid and boil, neutralise with Sodium Hydrogencarbonate. Then do the Benedict's test - add Benedicts reagent and heat. What is the scientific name for the polymer of carbohydrates? Polysaccharides. What is starch made of? Starch is a mixture of two polysaccharides of alpha glucose: Amylose and amylopectin. What is amylose? A long, unbranched alpha glucose chain, joined by alpha 1,4 glycosidic bonds. It has a coiled shape which makes it compact and effective for storage. What is amylopectin? A long, branched alpha glucose chain alpha 1,4 and alpha 1,6 glycosidic bonds. The side branches mean that enzymes can get to and hydrolyse glycosidic bonds faster so glucose can