Describe how an action potential stimulates synaptic release of neurotransmitters. (5 marks)
action potential depolarises the synaptic terminal this activates the voltage gated calcium channels Calcium ions diffuses into the cell down the electrical gradient Calcium ions stimulate the release of the vesicles containing the neurotransmitterby exocytosis
SP
Related Biology A Level answers
All answers ▸A plant community on an extinct volcano displays the process of succession. Explain why there would be very few species at the end of the eruptive life cycle of the volcano and why rate of new species introduction would rapidly increase afterwards.
Describe how the structure of glycogen allows it to perform its function and explain the advantages to animals of using glycogen as an energy store.
How is blood filtrated by the glomeruli in the kidneys?
examiners can ask us to design an experiment in order to explore an aspect of ecology. How would I go about doing this?