Study guides, Class notes & Summaries

AQA A LEVEL BIOLOGY PAPER 1 MARKING SCHEME 2023

AQA A LEVEL BIOLOGY PAPER 1 QP JUNE 2023

large molecules often contain carbon. why? - answer-they can readily form bonds with other carbon atoms. this forms a 'backbone'. other atoms can then attach. describe benedicts test for reducing sugars - answer-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? - answer-a sugar that can reduce (give electrons to) another chemical. describe the benedicts test for non ...

AQA A-2024LEVEL BIOLOGY PAPER 1 MARKING SCHEME LATEST UPDATE 2023- Benedict's test Which food test is heated in a water bath? Sucrose Which disaccharide is not a reducing sugar? Test for non-reducing sugars Add acid. Neutralise. Add Benedicts. Heat. Hydrolysis Reaction performed by dilute HCl in the non reducing sugar test. Glucose + fructose During the non-reducing sugar test what is sucrose hydrolysed into? Alpha Which type of glucose makes up starch? amylose and amylopectin Nam...

AQA A LEVEL BIOLOGY PAPER 1 QUESTIONS WITH VERIFIED ANSWERS

AQA A LEVEL BIOLOGY PAPER 1 2022 RETAKE EXAM QUESTIONS WITH VERIFIED ANSWERS

AQA A LEVEL BIOLOGY PAPER 1 (2024 VERSION) QUICK REVISION STUDY GUIDE WITH COMPLETE SOLUTION BASED ON PROFESSOR MATHEW

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. describe the benedicts test for non reducing sugars with food sampl...

AQA A-level BIOLOGY (7402/1) Paper 1 MARKING SCHEME QUESTIONS AND ANSWERS 2024 SPECIMEN VI Question 1: (a) Describe what is meant by the term 'metabolic rate'. [2] (b) Explain how the control of body temperature is an example of homeostasis. [4] Answer 1: (a) 'Metabolic rate' refers to the rate at which chemical reactions occur within an organism's cells. It's a measure of the amount of energy expended by an organism per unit of time. (b) The control of body temperature is ...

AQA A-level BIOLOGY (7402/1) Paper 1 PREDICTION QUESTIONS AND ANSWERS 2024 SPECIMEN VI Question 1: (a) Describe what is meant by the term 'metabolic rate'. [2] (b) Explain how the control of body temperature is an example of homeostasis. [4] Answer 1: (a) 'Metabolic rate' refers to the rate at which chemical reactions occur within an organism's cells. It's a measure of the amount of energy expended by an organism per unit of time. (b) The control of body temperature is...