Aqa a level biology test - Study guides, Class notes & Summaries

AQA A-level Biology paper 1 Questions and Answers Graded A+ large molecules often contain carbon. why? they can readily form bonds with other carbon atoms. this forms a 'backbone'. other atoms can then attach. describe benedicts test for reducing sugars add equal volumes of the sugar sample and benedicts reagent. heat the mixture in a water bath for 5 minutes. brick red precipitate will form. what is a reducing sugar? a sugar that can reduce (give electrons to) another chemical. descr...

AQA A level Biology Study Guide Revision Exam Containing 563 Questions with Definitive Solutions . Terms like: Describe how you would use a biochemical test to show that a solution contained a non-reducing sugar, such as sucrose. [3] - Answer: first reducing sugars test; boil with dilute HCl acid then Neutralize with NaHCǑ, add benedict and heat to 95 degrees C brick red ppt forms if reducing sugar is present

AQA A level Biology Study Guide Revision Exam Containing 563 Questions with Definitive Solutions . Terms like: Describe how you would use a biochemical test to show that a solution contained a non-reducing sugar, such as sucrose. [3] - Answer: first reducing sugars test; boil with dilute HCl acid then Neutralize with NaHCǑ, add benedict and heat to 95 degrees C brick red ppt forms if reducing sugar is present

AQA A-Level Biology – Enzymes Test Questions and Answers 100% Solved Activation Energy The minimum energy required for successful collisions to result in a reaction Enzyme Function Lowers the activation energy for a reaction to start, behaves as a catalyst Enzyme Structure Globular proteins that have a functional region known as an active site Active Site Functional region on an enzyme that is complimentary to substrates Complimentary Of a similar shape to one another

AQA AS BIOLOGY 7401/1 Paper 1 / AQA A LEVEL BIO QUESTIONS Question Paper & Mark scheme Merged June 2023 VERIFIED Q1.(a) Describe how you would test a piece of food for the presence of lipid. ....................................................................................................................... . ....................................................................................................................... . .................................................

AQA A-LEVEL BIOLOGY. 3.2 – CELLS TEST WITH CORRECT ANSWERS ONLY

"AQA A-level BIOLOGY 7402/1 Paper 1 Question Paper Mark scheme" Latest update Water removed from the reactants joining two molecules together forming a chemical bond Condensation The addition of water to the reactants to break a chemical bond between 2 molecules Hydrolysis 1. Add Benedict's reagent. 2. Heat the solution in a water bath for 5 minutes at 95 degrees Celsius. 3. Change from blue to brick red as CuO formed Test for Reducing Sugars (3) Smaller units from which larger molecu...

AQA A LEVEL BIOLOGY REVISION EXAM | QUESTIONS & 100% CORRECT ANSWERS (VERIFIED) | LATEST UPDATE | GRADEA+ Describe how you would use a biochemical test to show that a solution contained a nonreducing sugar, such as sucrose. [3] Correct Answer: ,first reducing sugars test; boil with dilute HCl acid then Neutralise with NaHCǑ, add benedict and heat to 95 degrees C brick red ppt forms if reducing sugar is present Describe a chemical test you could carry out to show that a piece of coc...

What is a molar solution? - Answer A solution that contains one mole of solute in each litre of solution What is polymerisation? - Answer The chemical process during which hydrocarbon monomers are joined to make longer strings of molecules (polymers). What are macromolecules? - Answer large organic molecules What is metabolism? - Answer the chemical processes that occur within a living organism in order to maintain life. What is covalent bonding? - Answer The atoms sha...