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A-level  BIOLOGY Paper 1  2020
  • Exam (elaborations)

    A-level BIOLOGY Paper 1 2020

  • 7402/1 S - The Marketplace for Revision Notes & Study Guides 2 Answer all questions in the spaces provided. Do not write outside the box 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 ...
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