AQA • Biology

AQA AS BIOLOGY 7401/2 paper 2 Marking Scheme JUN22.

AQA A LEVEL 7402/2 paper 2 Marking Scheme JUN22

AQA A LEVEL BIOLOGY 7402/1 Marking Scheme JUN22

AQA A-level BIOLOGY 7402/3 Paper 3 Mark scheme June 2019 . 100% CORRECT questions, answers, workings and explanations. Whatsapp +25479 093 7672 for assistance. Question Marking Guidance Mark Comments 01.1 1. High blood/hydrostatic pressure; 2. Two named small substances pass out eg water, glucose, ions, urea; 3. (Through small) gaps/pores/fenestrations in (capillary) endothelium; 4. (And) through (capillary) basement membrane; 3 max Ignore references to podocytes 1. Ignore refere...

AQA A LEVEL BIOLOGY PAPER 1 MARKING SCHEME 2020. 100% CORRECT questions, answers, workings and explanations. Whatsapp +25479 093 7672 for assistance. Question Marking Guidance Mark Comments 01.1 1. (ATP to ADP + Pi ) Releases energy; 2. (energy) allows ions to be moved against a concentration gradient OR (energy) allows active transport of ions; 2 1. Reject ‘produces/makes/creates energy’. 2. For ‘ions’ accept Na+ or K+. 2. Do not accept if this movement is of glucose not ...

AQA AS BIOLOGY 7401/1 Paper 1 Mark scheme June 2021. 100% CORRECT questions, answers, workings and explanations. Whatsapp +25479 093 7672 for assistance.Question Marking Guidance Mark Comments 01.1 1. Hydrogen (bonds); 2. Phosphodiester (bonds); 2 2. Accept ester/covalent bond Question Marking Guidance Mark Comments 01.2 Correct answer for 2 marks = 1489/1489.2;; Incorrect answer but for 1 mark accept: 876 OR 1861 - 1862 2 Question Marking Guidance Mark Comments 01.3 1. tRNA i...

Student notes for A level AQA biology. Detailed notes for exam revision from an A* student. All topics from 1-8 included with key exam points . Handwritten notes with good penmanship and clear diagram. Notes are written in various form to allow effective revision ( mind map, bullet point, diagram, flow chart, etc)

01.1 1. (ATP to ADP + Pi ) Releases energy; 2. (energy) allows ions to be moved against a concentration gradient OR (energy) allows active transport of ions; 2 1. Reject ‘produces/makes/creates energy’. 2. For ‘ions’ accept Na+ or K+. 2. Do not accept if this movement is of glucose not ions. 01.2 1. (Maintains/generates) a concentration/diffusion gradient for Na+ (from ileum into cell); 2. Na+ moving (in) by facilitated diffusion, brings glucose with it OR Na+ moving (...

AQA A LEVEL BIOLOGY PAPER 1 2020 QP

0 1 . 1 Describe how a non-competitive inhibitor can reduce the rate of an enzyme-controlled reaction. [3 marks