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Approaching source questions, whilst they may seem daunting, are reasonably straighforward. You use the simple PEA/PEE structure, whilst also taking into account the nature origin and purpose of the sourc...

A mutation in the DNA sequence may lead to a different amino acid sequence may lead to a different amino acid being produced in the primary protein structure of the enzyme during translation. This may cau...

The increased pressure caused by the stimulus opens pressure gated sodium ion channels allowing Na+ ions to diffuse (down a concentration gradient) into the axon. This sudden influx of Na+ ions causes a l...

Une vie rurale est très différente d'une vie urbaine mais comporte tout de même un grand nombre d'avantages. En effet, vivre à la campagne permet de mener une vie plus calme et apaisante étant donné qu'il...

An artery carries blood away from the heart. The blood is oxygenated with the exception of the pulmonary and umbilical artery. The vessel must cope with high pressure demands and therefore has thick, elas...