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As an action potential arrives at the presynaptic terminal, a depolarisation of the motor neuron membrane occurs which initiates the opening of voltage-gated Ca 2+ ion channels - releasing Ca 2+ into the neu...

In Spanish, the pluperfect subjunctive ( pluscuamperfecto de subjuntivo) refers to an action in the very distant past, much like the pluperfect indicative (había/habías...-ado/ido). However, the subjunctive ...

A metallic bond is the electrostatic force of attraction between the positive metals ions and the delocalised electrons. The three main factors that affect the strength of a metallic bond are: the number of ...

Sovereignty means legal supremacy. So parliamentary sovereignty is a legal theory which stipulates that the supreme law-making authority in the UK is the Westminiter Parliament. This is evident by three prop...

The best way to structure a History essay is usually thematically. For example, if a question is framed such as 'How successful was the Civil Rights Movement in America?' you should divide your essay into th...