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This question is taken from the 2014 Edexcel Pearson Specification. We must first address the type of question, it is a 15 marker, and as such warrants extensive depth as this is the largest question one ...

Semi-conservative DNA replication involves splitting open the parent cells DNA duplex and exposing both strands. Now these strands are accessible to replication machinery to act as a template, so that the...

Firstly, we would need to establish whether the person in question had the mens rea, or a guilty mind. With murder, the mens rea is plain, you need to have intended to kill a person or cause Grievous bodi...

Firstly, read through the text to see if there are any recurring ideas or anything that sticks out to you. Make sure to highlight, and make a note of them on a piece of paper. Texts often have have multip...

differentiating the equation gives dy/dx = 4x^3 - 12x^2 dy/dx = 4x^2(x - 3)

at a turning point, dy/dx = 0. Solving the equation 4x^2(x - 3) = 0 yeilds x = 0, x = 3

putting 0 and 3 back into ...