Aqa a level biology paper 1 2020 Study guides, Class notes & Summaries

0 1 Figure 1 shows a cell from the lining of the ileum specialised for absorption of products of digestion. SGLT1 is a carrier protein found in the cell-surface membrane of this cell, it transports glucose and sodium ions (Na+) into the cell. Figure 1 . The action of the carrier protein X in Figure 1 is linked to a membrane-bound ATP hydrolase enzyme. Explain the function of this ATP hydrolase. [2 marks]

AQA A-level BIOLOGY 7402/1 Paper 1 Mark scheme June 2022 Version: 1.0 Final. MARK SCHEME – A-LEVEL BIOLOGY – 7402/1 2 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...

AQA A LEVEL BIOLOGY PAPER 1 MARK SCHEME 2020

AQA GCSE COMBINED SCIENCE: TRILOGY 8464/B/2H Biology Paper 2H Mark scheme June 2020 Final Marking SchemeGCSE COMBINED SCIENCE: TRILOGY 8464/B/2H Biology Paper 2H Mark scheme June 2020 Document Content and Description Below AQA GCSE COMBINED SCIENCE: TRILOGY 8464/B/2H Biology Paper 2H Mark scheme June 2020 Final Marking SchemeGCSE AQA GCSE COMBINED SCIENCE: TRILOGY 8464/B/2H Biology Paper 2H Mark scheme June 2020 Fi nal Marking SchemeGCSE COMBINED SCIENCE: TRILOGY 8464/B/2H Biology Paper 2H Mar...

AQA AS Level Biology Paper 2 2020 Mark scheme AQA BIOLOGY AS LEVEL JUNE PAPER 2 Mark Scheme Mark scheme instructions to examiners 1. General The mark scheme for each question shows: • the marks available for each part of the question • the total marks available for the question • the typical answer or answers which are expected • Extra information to help the examiner make his or her judgement and help to delineate whatiiis acceptable or not worthy of credit or, in discu...

AQA A LEVEL BIOLOGY 2020 PAPER 1 QP

AQA A LEVEL BIOLOGY PAPER 3 2021 Marking Scheme