A-LevelBiologyControl and coordinationOct/Nov 2017Paper 4 Q68 Marks
Cloves are the aromatic flower buds of the tree Syzygium aromaticum. Eugenol is a drug extracted from cloves. Eugenol affects the movement of sodium ions through the cell surface membranes of sensory neurones. (a) Fig. 6.1 shows the effect of eugenol concentration on the percentage decrease in sodium ion movement. [Figure 6.1]
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