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It is possible to separate out the different organelles of a cell by spinning a homogenised solution of them at different speeds using an ultracentrifuge. The cells must first be placed in a cold, isotoni...

The best way to learn facts is in small chunks over a long period of time, so your need to organise your revision well before the exams start. Break the course up into sections (e.g. the Russian economy u...

The first step is to read the question very carefully, checking it three times over to make sure that you fully understand it. The worst mistake you can make in an English essay is to write about the wron...

Formula for a straight line y-y₁=m(x-x₁), where m is the gradient substituting in the values given to find the gradient we get 4-1=m(3+2), therefore m= 3/5the midpoint of the two poi...

Factors affecting supply will shift the supply curve in or out. These factors are costs of raw materials, technological advancements, wages. Factors affecting the elasticity of the supply curve will affec...