How does an action potential work?
Resting potential at - 75mV
Stimulus causes opening of sodium channels and influx of sodium ions, membrane becomes less polarized
Threshold potential reached at -55mV, opening of many more sodium channels, greater influx of sodium ions --> action potential generated
CH
Related Biology A Level answers
All answers ▸Describe the primary, secondary and tertiary structure of proteins
In ecology, what does the phrase 'carrying capacity' refer to and what factors may determine it?
Explain how a change in a sequence of DNA bases could result in a non-functional enzyme
(Substrate) is hydrolysed by (Enzyme). Explain why (Enzyme) catalyses only this reaction. (3 Marks)