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The water potential of the blood is constantly monitored by specialised sensory neurones in the hypothalamus known as osmoreceptors. When these cells detect that the water potential of the blood is beginn...

Mitosis is used for growth, repair and replacement of tissue or in the case of asexual organisms - reproduction. It results in the formation of daughter cells which are genetically identical to the origin...

The cell membrane, or phospholipid bilayer, encompasses the contents of a cell and allows for organelles to be contained within the cytoplasm. The cell membrane is semi-permeable, thus is allows the movem...

Following a meal, the levels of glucose in the blood will increase. This increase in the level of glucose needs to be controlled, otherwise the levels of glucose will become too high and someone could end...

Chemical reactions occur faster at higher temperatures since at higher temperatures the enzyme is more likely to bump into the substrate more often and with a higher energy than at a lower temperature. Th...