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This question requires us to make use of the trigonometric identities tan(y)=sin(y)/cos(y) and sin^2y + cos^2y = 1 which are given in the formula sheet of the exam. Since we know that sin(y)/cos(y) can be...

Conclusions can be critical to your overall mark and should never be rushed! The main aim of a conclusion is to bring together everything you have written to come to a judgement. Examiners love originalit...

As with English, prepositions aren't needed in every sentence, however many nouns, verbs and adjectives do require one. Remember: they will affect the rest of a sentence grammatically. However, we can tal...

RNA is single stranded, whereas DNA is double stranded. RNA has a uracil base instead of DNA's thymine base. RNA has a ribose sugar, whereas DNA has a deoxyribose sugar.

The pumping of the heart is split into two main phases, diastole (relaxation) and systole (contraction) and involves the four main chambers of the heart, the atria and ventricles, as well as the associate...