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The state of balance in the internal environment of the body it includes control of the water balance of the blood, body temperature, blood sugar level and blood urea level. Each of these internal factors is maintained by a separate mechanisms the central nervous system and the endocrine system. Before these systems can bring about any change they have to be supplied with information regarding the body state. Living cells and all the chemical reactions are controlled by enzymes; the enzymes are very sensitive to the conditions in which they work (PH). A slight fall in temperature or a rise in acidity may slow down or stop an enzyme from working and thus prevent an important reaction from taking place in the cell.
Cell membrane controls the substances which enter and leave the cell, but it is the tissue fluid which supplies or removes these substances, and it is therefore important to keep the composition of the tissue fluid as steady as possible. If the tissue fluid were too concentrated, it would withdraw water from the cells by osmosis and the body would be dehydrated. If the tissue fluid were too dilute, the cells would take up too much water from it by osmosis and the tissues would become waterlogged and swollen.
For many years, students who have occupied my Molecular Biology course have now applied for lab tech jobs exact after graduation. But I have NEVER had a student fail to obtain a jo
what is non conventional feed
Leghaemoglobin - Factors Influencing Functions of Nitrogenase Leghaemoglobin is a joint product of Rhizobium and the host. It is produced during the maturation of nodule. It i
Define about the Environmental deficiency of iodine? The ultimate causative Factor is deficient intake of iodine. Iodine occurs in soil and sea as iodide, the ions of which arc
Habit and habitat
Food Chain - Ecosystem In a food chain, the food energy is transformed from a given source through a series of species, each of which eats the one before itself in the chain.
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Discuss why humans not evolve with one central repository of DNA rather than having it replicated throughout the body?
according to the graph,which age is the amount og growth hormone produced at its highest?
SEXUA L REPRODUCTION 1 . Amphigony - Zygote is formed. (i) Syngamy Fusion of gametes. (a) Endogamy - It involves self fertilisation. e.g.
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