A-LevelBiologyCell membranes and transportOct/Nov 2023Paper 1 Q161 Mark
Plant cells were left for 50 minutes in three different sugar solutions, 10%, 5% and 1%. The water potential in the cytoplasm of the three cells was the same at the start of the experiment. The diagrams show the appearance of the cells after 50 minutes, using a light microscope. [Figure 16.1] Which conclusion is correct?
ACell P has the same concentration of sugar inside and outside the cell.
BCell Q is flaccid and cell P is plasmolysed.
CCell Q was placed in the 1% solution.
DThe sugar solution outside cell R has a less negative water potential than inside cell R.
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The correct answer is C. 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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