Hydrolyse - Guides d'étude, Notes de cours & Résumés

AQA A LEVEL BIOLOGY Paper 3 MS 2021 S - The Marketplace to Buy and Sell your Study Material Downloaded by: BetterAcademics | Distribution of this document is illegal S - The Marketplace to Buy and Sell your Study Material MARK SCHEME – A-LEVEL BIOLOGY – 7402/3 – JUNE 2021 Downloaded by: BetterAcademics | Distribution of this document is illegal A-level BIOLOGY 7402/3 Paper 3 Mark scheme June 2021 Version: 1.0 Final 2 S - The Marketplace to Buy and Sell your Study Materia...

AQA ALEVEL BIOLOGY;DIGESTION $ ABSORPTION EXAM 2024 What is amylase for - ANSWER-Hyrdolyses alternate glycosidic bonds of starch molecule to produce maltose Where is maltase produced? - ANSWER-(In the cell membrane of epithelial cells) Small intestine Maltose - ANSWER-glucose + glucose Where is maltase secreted? - ANSWER-Small intestine (In the epithelial cells of the small intestine) Lining of ileum Role of maltase - ANSWER-Hyrdolyses maltase into monosacc...

2024 AQA AS BIOLOGY 7401/1 Paper 1 Question Paper & Mark scheme (Merged) June 2023 VERIFIED / Biology AQA AS level 7401/1 Paper 1 Describe the induced-fit model of enzyme action - ANSWER-- active site not complementary to/does not fit substrate - Shape of active site changes as enzyme- substrate complex forms - Distorting bonds (in substrate leading to reaction) • The human cell then makes a complementary strand to the HIV DNA. The complementary strand is made in the same way as a new com...

Human Physiology with correct Question Answers 2024 final exam Myogenic Describes muscle tissue (heart muscle) that generates its own contractions. (action potentials) Ventricular myocyte action potential • Long lasting! >100ms • Has plateau phase due to presence of a large sustained Ca2+ current (ICaL) • Less chance of tetani! Lysosymes A membrane bound organelle that is responsible for degrading proteins and membranes in the cell, and also helps degrade materials ing...

Biology_7401 Marking Scheme Paper 1. Question Marking Guidance Mark Comments 01.1 Letter Statement B; is a monomer in an enzyme’s active site D; is a monomer in cellulose C; is produced during photosynthesis and respiration B; forms a polymer that gives a positive result with a biuret test 4 Must be in correct order 01.2 C = 18, H = 32, O = 16; 1 Accept only these answers 01.3 1. Heat with acid and neutralise; 2. Heat with Benedict's (solution); 3. Red precipi...

AQA AS BIOLOGY Paper 2 Thursday 25 May 2023 Morning Time allowed: 1 hour 30 minutes Materials For this paper you must have: • a ruler with millimetre measurements • a scientific calculator. Instructions • Use black ink or black ball-point pen. • Fill in the boxes at the top of this page. • Answer all questions. • You must answer the questions in the spaces provided. Do not write outside the box around each page or on blank pages. • If you need extra space ...

AQA A-Level Biology Paper 1 Critical Questions 2023Describe the role of a ribosome in the production of a polypeptide. /3 - 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 - ANSWER 1. Polysaccharide of α-glucose; OR polymer of α-glucose; 2. (Joined by) glycosidic bo...

Describe the role of a ribosome in the production of a polypeptide. /3 correct answers 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 answers 1. Polysaccharide of α-glucose; OR polymer of α-glucose; 2. (Joined by) glycosidic bonds OR Branched structure; NHE3...

AQA ALEVEL BIOLOGY;DIGESTION $ ABSORPTION EXAM 2024 What is amylase for - ANSWER-Hyrdolyses alternate glycosidic bonds of starch molecule to produce maltose Where is maltase produced? - ANSWER-(In the cell membrane of epithelial cells) Small intestine Maltose - ANSWER-glucose + glucose Where is maltase secreted? - ANSWER-Small intestine (In the epithelial cells of the small intestine) Lining of ileum Role of maltase - ANSWER-Hyrdolyses maltase into monosacc...

BTEC Applied Science Unit One Biology 128 Questions with Answers What is the function of the mitochondria? - CORRECT ANSWER cellular respiration What is the function of the ribosomes? - CORRECT ANSWER protein synthesis What is the function of the smooth endoplasmic reticulum? - CORRECT ANSWER Synthesis and transport of lipids and carbohydrates What is the function of the Golgi apparatus? - CORRECT ANSWER Modified and packaged proteins into vesicles for transport What is the functi...