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As an action potential (AP) arrives at the synaptic knob and depolarises the presynaptic membrane, voltage-gated Ca2+ channels open, allowing the entry of Ca2+ ions, This caues vesicles (membrane-bound organ...

Simple time signatures can be sub-divided into equal groups of two, whereas compound time signatures can be sub-divided into beats of three. For example, in the simple time signature of 2/4, there are four q...

While Hitler's assention tothe position of 'Fuhrer' in 1934 went against the Weimar Constituion because it combined the two offices of Chancellor and President, historians point to the referendum which follo...

Pressure groups in the UK and the US are bodies of activists who campaign on and seek to influence areas of government policy which they have a common interest in. An example of a UK pressure group would be ...

It can sometimes be a struggle to deal with the jump between GCSE and A Level. At GCSE you're likely to encounter questions which ask what happened whereas at A Level you are more likely to be asked why thin...