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Coenzymes contrary to their name aren't enzymes but are synthesised from vitamins. Their overall purpose is to bind to the active site of a specific enzyme to aid the binding of the complemenatry substrat...

This style of question is common and is often worth around 6 marks. You should address each of ions , water and sugar seperately to ensure that you get maximum marks.

Ions enter the plant via diffu...

According to Hume , the problem of suffering is viewed as the “rock of Atheism” and poses questions to Theists on the characteristics of God and even His existence. Aquinas in his book Summa Theological p...

To simplify this fraction, you must rationalise the denominator (lower half of the fraction) to get rid of the surd. A surd is an irrational number that cannot be simplified further to remove the square r...

This question, worth 12 marks, requires a focus on three (or more if you have time) main reasons, which you can develop. I would suggest before starting this question that you write down every reason you ...