740202 - Study guides, Class notes & Summaries

AQA A-level BIOLOGY 7402 2 Paper 2 2020 Mark scheme.

AQA_A_level_BIOLOGY_7402_2_Paper_2_2020_Mark_scheme

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 (in) by co-transport, brings glucose with it; 2 1. Accept ‘(Maintains/generates) a lower concentration of Na+ inside the cell compared with outside the cell’. 2. Accept ‘co-transporter’ for ‘co-transport’. 01.1 1. (ATP to ADP + Pi ) Releases energy; 2. (energy) allows ions to be...

AQA A LEVEL BIOLOGY 7402/1 MARK SCHEME 2020

AQA A-LEVEL BIOLOGY 7402/1 PAPER 1 MARK SCHEME JUNE 2020

AQA A-level BIOLOGY 7402/1 Paper 1 Mark scheme June 2020

MARK SCHEME – A-LEVEL BIOLOGY – 7402/2 – JUNE 2020 5 Question Marking Guidance Mark Comments 01.1 1. Circular muscle contracts; 2. Radial muscle relaxes; 2 1 and 2. Accept, for one mark ‘both muscles contract’ or ‘both muscles relax’ as names of muscles are in Figure 1. Reject muscles constrict. 01.2 1. High (visual) acuity; 2. (Each) cone is connected to a single neurone; 2. (Cones send) separate (sets of) impulses to brain; 3 2. Accept no retinal convergenc...

AQA A-level BIOLOGY 7402 2 Paper 2 2020 Mark scheme

-7402-1-QP-Biology-A-6Jun19-AM-pdf (1) BIOLOGY PAPE 2019-2020

-7402-1-QP-Biology-A-6Jun19-AM-pdf (1) BIOLOGY PAPE 2019-2020