AQA A LEVEL 2020 BIOLOGY PAPER 1 MARKSCHEM E

AQA

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AQA A-LEVEL 2020 BIOLOGY PAPER 1 MARKSCHEME

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AQA A-LEVEL 2020 BIOLOGY PAPER 1 MARKSCHEME
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23

juni 2023

2022/2023

A+
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 (...
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AQA A LEVEL 2020 BIOLOGY PAPER 1 MARKSCHEM E

AQA

AQA A-LEVEL 2020 BIOLOGY PAPER 1 MARKSCHEME