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Break this question down into the four stages: primary, secondary, tertiary and quarternary and for each one describe the structure and what the non-covelant interactions are that hold the protein toge...

This is quite a complicated sounding question but it is actually quite simple if you break it down! Start by writing a balanced equation for the reaction:

3H₂ (g) + ...

The Passive, as in English is one of the three grammatical voices and is used to say that something is 'being done by somebody else'. In grammatical speak, we would say that the action th...

It is absolutely imperative that you read the poem through first at least twice. I would suggest that you whisper it to yourself, even in exams, because poetry is a highly experiential literary form an...

Let's begin with an example.

"What immortal hand or eye, / Could frame thy fearful symmetry?"

Hypothetically, this question would be from an A2 examination on Will...