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Explain how action potentials are transmitted across synapses.

The action potential runs along the presynaptic membrane in a wave of depolarisation and activates the Voltage Gated Calcium ion channels. 2) Once these channels open, Ca2+ diffuses into the presynaptic neur...
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Answered by Liam O. • Biology tutor
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How does William Blake's speaker present the themes of restriction and control in his poem 'London'? Consider the physical and psychological representation of these themes in your answer.

William Blake’s 1794 poem 'London' is one of the most recognisable entries in his seminal work Songs of Experience. It depicts a hopeless and morose version of the English capital because it presents the the...
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Answered by Will M. • English tutor
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Explain the simple future and compound future tenses and how to form these tenses

The simple future translates to English as "personal pronoun (I, you, he, she, we, they) + will + infinitive of the verb" Eg. I will speak The compound future translates as "personal pronoun +...
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Answered by Lydia P. • French tutor
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The equation: x^3 - 12x + 6 has two turning points. Use calculus to find the positions and natures of these turning points.

To find the turning points we need to find when the differential of the equations with respect to x is equal to 0. (dy/dx = 3x 2 - 12 = 0) From this we find that the turning points happen when x = 2, x = -2 ...
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Answered by Jon R. • Maths tutor
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Answered by Deborah M. • Biology tutor
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