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DNA is used to code proteins. This requires two steps: transcription and translation.Transcription is the conversion of double stranded DNA into a single stranded mRNA molecule. DNA nucleotides bind to their...

For many reasons cell division can become unregulated. This leads to the formation of a mass of cells called a tumour which cannot perform their normal function – they are said to be undifferentiated. In som...

The most important thing to remember about rearranging equations is that what you do to one side, you have to do to the other side as well to balance it. In the question above, to get rid of the 2 on the rig...

As the expression contains 4 separate terms that are added together, we can treat this as 4 separate differentiations. The general rule for differentiation for a general term bx^n is (b n)x (n-1) . For examp...

A verb is called reflexive when the subject performs an action on the same subject. For example, ‘I wash myself’ (in Italian ‘Mi lavo’) is reflexive because ‘I’ is both the subject and the object of the verb...