A-LevelBiologyCell membranes and transport9700/12 · May/June 2016 · Q311 Mark
The photograph shows a type of blood cell. [Figure 31.1] Which statements about these cells are correct? 1 Oxygen diffuses through the phospholipid bilayer. 2 Sodium ions diffuse through the phospholipid bilayer. 3 Water passes in and out of these cells by osmosis.
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A1, 2 and 3
B1 and 2 only
C1 and 3 only
D2 and 3 only
✓ Correct answer
C: 1 and 3 only
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