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The two antiparallel strands of DNA are held together by hydrogen bonds joining the bases of each complementary nucleotide; Adenine is held to Thymine by 2 hydrogen bonds, and Guanine to Cytosine by 3 hyd...

Before writing the essay It is essential to roughly plan your essay, which will provide effective framework to your ideas and analysis. Write down three other relevant musical work...

Close reading! The easiest and most straight forward way to improve your English grade is to get to grips with analysis. With both GCSE and A Level, the fastest way to climb the marking criteria is showin...

Myelinated and non-myelinated neurones have different structures which is why the speed of action potentials differ. In a Myelinated neurone, a myelin sheath is wrapped around the axon. This myelin sheath...

CO₂ levels in the atmosphere could have increased due to deforestation, as there are now less trees to re-absorb this gas. Emissions of CO₂ may also have risen due to the increased b...