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The role of the myelin sheath is to speed up the conduction of an action potential along neurones. It's made up of Schwann cells that wrap around neurones, forming an insulating layer with gaps inbetween ...

With any novel I would firstly advise that you have an extensive knowledge of the plot. For each chapter, as you read it, it may help to write yourself a short summary of what happened, which characters a...

I remember this by: I Peed on the MAT, C (read:see)Interphase- 90% of a cell's life is in this metabolic phaseProphase- chromatin conden...

A stationary point is where the curve has 0 gradient. So to prove that x=4 is a stationary point, we must find the equation of the first derivative. To do this, differentiate x² - 2x - 24sqrtx....

Whilst explaining my response I would highlight the use of the different assessment objectives in my answer, to show where my answer is picking up marks on the mark schemeSettings and places can ...