AQA A LEVEL BIOLOGY Paper 1 Study guides, Class notes & Summaries

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...

2024 LASTEST AQA A LEVEL BIOLOGY PAPER 1 REAL EXAM QUESTIONS AND CORRECT ANSWERS |GRADED A+

Benedict's test - CORRECT ANSWER-Which food test is heated in a water bath? Sucrose - CORRECT ANSWER-Which disaccharide is not a reducing sugar? Test for non-reducing sugars - CORRECT ANSWER-Add acid. Neutralise. Add Benedicts. Heat. Hydrolysis - CORRECT ANSWER-Reaction performed by dilute HCl in the non reducing sugar test. Glucose + fructose - CORRECT ANSWER-During the non-reducing sugar test what is sucrose hydrolysed into? Alpha - CORRECT ANSWER-Which type of glucose makes up...

AQA A-level Biology paper 1 Exam/134 Questions and Answers

AQA A-LEVEL BIOLOGY PAPER 1 SPECIMEN MARKING SCHEME A-level BIOLOGY (7402/1) Paper 1 Mark scheme Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant questions, by a panel of subject teachers. This mark scheme includes any amendments made at the standardisation events which all associates participate in and is the scheme which was used by them in this examination. The standardisation process ensures that the mark scheme covers the st...

AQA A level Biology Paper 1 Questions and Answers Verified 2024 Benedict's test - Correct Answer Which food test is heated in a water bath? Sucrose - Correct Answer Which disaccharide is not a reducing sugar? Test for non-reducing sugars - Correct Answer Add acid. Neutralise. Add Benedicts. Heat. Hydrolysis - Correct Answer Reaction performed by dilute HCl in the non reducing sugar test. Glucose + fructose - Correct Answer During the non-reducing sugar test what is sucrose hydrolys...

AQA A Level Biology Paper 1 Questions and Correct Answers Verified 2024 Describe the role of a ribosome in the production of a polypeptide. /3 - Correct Answer 1. mRNA binds to ribosome; 2. Idea of TWO codons/binding sites; 3. tRNA with ANTICODONS binds; 4. (Catalyses) formation of PEPTIDE bond between AMINO ACIDS (held by tRNA molecules); 5. Moves along (mRNA to the next codon); Describe the structure of glycogen. /2 - Correct Answer 1. Polysaccharide of α-glucose; OR polymer of α-...