A-LevelBiologyControl and coordinationOct/Nov 2022Paper 4 Q96 Marks
Voltage-gated channels are involved in the generation of an action potential. Fig. 9.1 is a diagram of the voltage-gated channels of sodium ions and potassium ions in the membrane of an axon. The channels are shown in three different states, 1, 2 and 3. [Figure 9.1] Fig. 9.2 is a diagram of different phases of an action potential in an axon. The phases are labelled A, B, C, D, E, F and G. [Figure 9.2]
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