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A group of similar tissues that work together to perform a particular function.

Air always moves from an area of higher pressure to an area of lower pressure, an example of this is when there is a puncture in a tyre. The air in the tyre is at higher pressure than normal and so when t...

So first we must gather the informaton, the disease is caused by a dominant allele, we may call this 'D', the recessive could therefore be 'd'. The mother has the disease, but the father does not. Therefo...

An enzyme is a catalyst / which speeds up a reaction. It's a protein and/or it's specific (due to its active site)

Firstly we must understand what exercise does to the body and the Circulatory system. We know that muscles need ATP to contract, this is demanded much more during a more strenuous exercise. ATP is created...