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When an action potential reaches the terminal of a pre-synaptic cleft, voltage-gated calcium channels are stimulated to open, causing an influx of Ca+ ions in the pre-synaptic neuron. This infux of Ca+ io...

Price elasticity of demand = % change in quantity demanded / % change in price
PED = ((2m - 1m)/1m x100) / ((1.35-1.5)/1.5 x100)
PED = 100/-10PED= -10
it is price elastic since PED < -...

Introduction - Establish an opinion on the quotes/ Establish the two key sides of the argument. In this case the presentation of Othello as a figure who conforms to the classical Aristotle form of tragedy...

I. 3x + 5y = 19 II. 8x - 2y = -18 . We see that we can simplify the second equation, and we do so: II. x - y = -9. Now, we check to see which variable i...

The phagocyte recognises antigens on the surface of the bacteria as foreign, causing it to be attracted to the bacteria. The phagocyte then engulfs the bacteria, forming a vesicle around it. Lysozomes fus...