Germ theory states that certain diseases are caused by the invasion of the body by microorganisms, organisms too small to be seen except through a microscope. In the 1800s, this idea was not widely accepted, and it took a series of experiments and hard work for Pasteur to prove that air contains infinitely small living organisms, and that these organisms are responsible for diseases. Germ theory, in medicine, the theory that certain diseases are caused by the invasion of the body by microorganisms, organisms too small to be seen except through a microscope.The French chemist and microbiologist Louis Pasteur, the English surgeon Joseph Lister, and the German physician Robert Koch are given much of the credit for development and acceptance of the theory. Trained as a chemist, his first major contribution was a study of asymmetric crystals (Valery-Radot, n.d.). “The central dogma of the germ theory is that each particular type of fermentation or of disease is caused by specific a kind of microbe” (Dubos, 1998). These small organisms, too small to see without magnification, invade humans, other animals, and other living hosts. The Germ theory of disease is a theory in biology.It says that small organisms (called germs), also known as microbes, cause some diseases.These diseases are called infectious diseases.The germ theory states that small organisms cause a reaction in the body of those who are infected. The germ theory of disease is the currently accepted scientific theory for many diseases.It states that microorganisms known as pathogens or "germs" can lead to disease. The germ theory is a fundamental tenet of medicine that states that microorganisms, which are too small to be seen without the aid of a microscope, can invade the body and cause certain diseases. Their growth and reproduction within their hosts can cause disease. Germ theory presentation 1. The germ theory states that many diseases are caused by the growth and reproduction of specific microorganisms within a host body. The germ theory of disease states that certain diseases are caused by specific germs or infectious agents. The Establishment of Germ Theory of Disease. The germ theory of disease is the currently accepted scientific theory of disease. Such microorganisms can consist of bacterial, viral, fungal, or protist species. The quiz questions will test you on main points from the lesson, such as the specifics of germ theory, and Pasteur's experiments. Although he never tested the theory, Pasteur suggested that a disease might be controlled by exposing the wound to germ-killing chemicals. 9/14/2016 Micro Bio 1 Test­ Study Guide Flashcards | Quizlet 2/9 Pasteurization a process of heating food to a temperature that is high enough to kill most harmful bacteria without changing the taste of the food Koch's postulates Proved the Germ theory of disease: A specific disease was caused by a specific bacterium . For Louis Pasteur (1822–1895), fermentation provided the path to germ theory. The body's reaction to infection is called a disease. Germ Theory Definition. Germ theory of disease is based on the concept that many diseases are caused by infections with microorganisms, typically only visualized under high magnification. The germ theory of disease is the currently accepted scientific theory for many diseases.It states that microorganisms known as pathogens or "germs" can lead to disease. 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