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Phylogeny is the evolutionary relationships between different species. Species within the same taxonomic group have shared phylogeny (i.e. they have a common ancestor). (1) Phylog...
Genetic variation is important because it allows natural selection to act on the population. Individuals that inherit advantagous alleles are more likely to survive and successfully reproduce. Crossing ov...
-A phospate group -A hexose sugar (deoxyribose) -A nitrogenous base (A, G, C or T)
Bile is alkaline, so it neutralises the hydrochloric acid from the stomach. This creates the right pH for the enzymes working in the intestine. As well as this, bile is an emulsifier. It breaks up big dro...
The coronary arteries supply the blood to the tissues of the heart, which is made up of cells called myocytes. In the body, the heart acts like a pump and contracts in order to force blood out into the re...
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