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The main bonding in DNA which renders the double helix structure so stable is that of hydrogen bonds. Between the complementary base pairs, hydrogen bonds connect the two strands of the helix. There are 3 H ...

Rearranging is one of the trickier topics in GCSE maths, however as long as you follow it through step by step you shouldn't have a problem. The question asks you to make 'c' the subject. This means you need...

This question can be difficult, because it involve a lot of words. This can make it confusing as to what information we really need to use - just work it through step by step. Sam uses 140g of flour to make ...

There are a number of integrals that we can evaluate directly, called elementary functions:integral[ x dx ] = x 2 /2 + Cintegral[cos( x ) dx ] = sin( x ) + C However, most integrals cannot be solved so direc...

Intertextuality is the relationship between different texts, specifically literary ones. It is the way that texts refer to and influence other texts. Julia Kristeva first used the term in her 1966 work Word,...