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A-LevelBiologyCell membranes and transportOct/Nov 2023Paper 2 Q18 Marks

Scientists measured the concentration of sodium ions and potassium ions in the red blood cells and in the blood plasma of a group of people. The results are shown in Table 1.1. Table 1.1 mean concentration of sodium ions /mmol dm⁻³ red blood cells 10 blood plasma 100 mean concentration of potassium ions /mmol dm⁻³ 100 4

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The correct answer is . This question tests the candidate's understanding of cell membranes and transport within the Biologysyllabus. The examiner's mark scheme requires...

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Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...

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About This A-Level Biology Question

This structured question appeared in the Cambridge A-Level Biology (9700) Oct/Nov 2023 examination, Paper 2 Variant 1. It tests the topic of Cell membranes and transport and is worth 8 marks.

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