Archimede darwin

Disponible uniquement sur Etudier
  • Pages : 2 (333 mots )
  • Téléchargement(s) : 0
  • Publié le : 25 mai 2010
Lire le document complet
Aperçu du document
Archimede et Darwin et Health
Evolution: the notion of all live forms have descended from the same source , and adapted to their environment over time.
Natural selection: the mechanism by whichplants and animals change over time to fit their environment , only the best suited will reproduce and pass on their successful characteristics.
Punctuated Equilibria: The notion of evolution wherebychange does not occur gradually as Darwin had assumed but in brief spurts.
The principle of Archimedes: Archimedes’ principle began with a problem about a gold wreath that had been given to the kingof Syracuse . The king thought that the goldsmith had disguised his deceit by making the wreath bigger. Archimedes worked on how to determine a volume and with a lot of luck , one day he was having abath when he noticed that the more of him that got in the bath , the more water spilled out of the bath , he suddenly realised that the volume of water was equivalent to the volume of his body gettingin the bath. He had discovered the principle of liquid displacement.
Penicillin: is a group of antibiotics derived from Penicillium fungi . Penicillin antibiotics are historically significantbecause they are the first drugs that were effective against many previously serious diseases such as Syphilis.
Antibiotics: in common usage , an antibiotic is a substance that kills bacteria a inhibitsitsgrowth . The term antibiotic was coined by Selinan Waksman in 1942 to describe any substance produced by a microorganism that is antagonistic to the growth of other microorganisms in high dilution.DNA: is a nucleic acid that containts the genetic instructions used in the development and functioning of all known living organisms and some viruses. The main role of DNA molecules is the long-termstorage
of information , DNA is often compared to a set of blueprints.
Petri dish: A Petri dish is a shallow glass or plastic cylindrical lidded dish that biologist use to culture cells . Glass...
tracking img