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Stuvia-1444431-aqa-a-level-biology-paper-1-2020-question-paperverified-questions-2020.pdf
S 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] . The movement of Na+ out of the cell allows the absorption of glucose into the ...
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Exam (elaborations)
Aqa A-Level Biology Paper 1 2020 Question Paper(Verified Questions 2020-2023 Latest Update
PopularAqa A-Level Biology Paper 1 2020 Question Paper(Verified Questions 2020-2023 Latest Update
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