AQA A-level Biology paper 1Questions &Answers(RATED A+)

Benedict's test - ANSWERWhich food test is heated in a water bath? Sucrose - ANSWERWhich disaccharide is not a reducing sugar? Test for non-reducing sugars - ANSWERAdd acid. Neutralise. Add Benedicts. Heat. Hydrolysis - ANSWERReaction performed by dilute HCl in the non reducing sugar test. Glucose + fructose - ANSWERDuring the non-reducing sugar test what is sucrose hydrolysed into? Alpha - ANSWERWhich type of glucose makes up starch? amylose and amylopectin - ANSWERNames of two types of starch Amylose - ANSWERCoiled, compact form of starch. Stored easily. Amylopectin - ANSWERBranched form of starch. More easily hydrolysed. surface area - ANSWERBranched carbohydrates have a higher _____ for enzymes to work on. Glycogen - ANSWERCarbohydrate store in animals branched - ANSWERGlycogen is.... metabolic rate - ANSWERGlycogen is more branched than amylopectin because animals have a higher _____________ osmotically inactive. - ANSWERStarch is insoluble and therefore .... Beta - ANSWERWhat type of glucose is cellulose made from? Alpha and beta glucose - ANSWERH and OH swapped on Carbon 1. Fibrils - ANSWERCellulose forms long chains called... H bonds - ANSWERCellulose molecules are crosslinked by strength - ANSWERCross linking of cellulose molecules gives them... Triglycerides - ANSWER_______ are a good source of energy because they have a high ratio of energy-storing carbon-hydrogen bonds what are the roles of lipids? - ANSWER1. source of energy 2. waterproofing 3. insulation 4. protection