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Firstly, lets define each of the important scientific words here. Hormones are chemical messengers in the body which aid in the chemical coordination of different functions, for example, related to homeos...

standard form is a way of writing very large numbers or very small numbers in a condensed form. E.g. 1,600,000,000 can be written as 1.6x10^9 

White blood cells produce antibodies which are produced rapidly upon re-infection and these antibodies kill pathogens.

Yes, in order to maximise the amount of marks you obtain you must write down all of your working as often the answer is only worth 1 mark whereas the working out makes up the rest of the marks. Always sho...

In order to calculate this integral we must use the sustitution provided. x=2siny. Firtsly I will differentiate to find the dx component of the integral, so dx/dy=2cosy hence, dx=2cosydy. Now for the limi...