Essay Database

… within the brain and act together as a unit to regulate the activity of most of the other endocrine glands. The hypothalamus is sometimes referred to as the control centre as it controls pituitary function and plays a vital role co-ordinating between…

… proposed in the 1960's, the theory of endosymbiosis. It was then officially published in her book "Symbiosis in Cell Evolution". The theory suggests that cells originated as communities of interacting entities a could join together in a specific…

… one hand, giant corporations, ambitious scientists and powerful politicians are pushing forward with projects they claim will benefit mankind, and on the other, public opinion, environmentalists and consumers' associations are concerned that these…

… changes to the activity of Enzyme Catalyses. By Marcus Final update: 26/11/03 Apparatus needed: Boiling tubes Beakers Bung with a delivery tube Thermometer 5ml syringe (To collect potato) 10ml syringe (To measure the amount of solution) Diced potato…

… Rain Forest and the Raintree Nutrition Inc website, says that "rain forests are the world's greatest natural resources and the most powerful and bio-actively diverse natural phenomenon on the planet." In spite of this, they are being destroyed every…

… teams announced in November 1998 that they had successfully isolated and grown a special kind of cell with the potential to develop into virtually any kind of human tissue. The breakthrough was widely hailed as a pioneering event with vast potential…

… deaths world wide, every year. This creature causes its victims to suffer through immense torture before slowly killing them within a period of 10 days. What may come as a shock, is that I'm talking about a small Common Malaria Mosquito. Also known…

… by the bacteria bacillus anthracis. One theory about this disease is that anthrax was the Fifth Plague of Egypt mentioned in The Bible. Casimir Davaine first saw these rod-shaped bacteria in 1850. In 1876, Robert Koch discovered that bacillus anthraci…

… It was developed from the findings of experiments carried out to determine what substances make plants grow and the composition of plants. This dates back as early as the 1600s. Plants were being grown in a soil less culture far earlier than this. There…

… The proposal combined the ideas presented by both the utility companies and the boat and lake house owners, so these groups were pleased. However, The I.O. committee may not have fully understood the proposal presented by the entrepreneurs,…