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Glycolysis is the first stage of respiration. It involves converting one molecule of glucose into two molecules of pyruvate, with the help of ATP. There are two stages of glycolysis. The first stage is en...

For AQA GCSE you need to have an understanding of coronary heart disease, the factors that lead to it and the available treatments. The coronary artery is the vessel that supplies the heart with glucose a...

1.     Hypothalamus is thermoregulatory centre in brain. This detects increase in temperature (above 37 degrees Celsius) and is activated.2.    Hypothalamus causes vasodilation of skin capillaries, which ...

Can be used in adaptive or innate immune response.Can be used to link the two responses, i.e. forming APC which forms MHC complex 2 (endogenous pathway) and presents to complementary CD4+T helper cells. L...

A gene is a length of DNA that codes for a particular trait. ( Think of- jeans - they are long items (length) of clothing, what they're made out of determines what they are. This is a key concept of g...