There is no shortage of microbes that cause disease. In the 1850s, louis pasteur found that microorganisms caused food spoilage, debunking the theory of spontaneous generation. Introduction to pathogens molecular biology of the cell ncbi. Which of the following is common in the disease caused by. A few harmful microbes, for example less than 1% of bacteria, can invade our body the host and make us ill. Different diseases are caused by different types of microorganisms. There is also strong evidence that microbes may contribute to many noninfectious chronic diseases such as some forms of cancer and coronary heart disease. Following is a list of 8 known diseases caused by microbes. The molecular ecology of microbial eukaryotes unveils a hidden world pdf. Some microbes cause disease but the majority are completely harmless.
However, the bacteria that cause tuberculosis break down tissue, whereas the bacteria that cause diphtheria release toxins. Ebola ebola is one of the most lethal viruses to infect humans, with a mortality. Moist heat kills microorganisms by denaturing their proteins causes proteins and enzymes to lose their threedimensional. You have learnt about some of these microorganisms in.
Systemic diseases caused by oral microorganisms debelian. List of human diseases caused by bacteria,virus,fungi. Microorganisms and disease questions answers pdf free download in microbiology mcqs,interview questions,objective questions,multiple choice. The microorganisms that gain entrance to the blood circulate throughout the body, but are usually eliminated by the host reticuloendothelial system within minutes.
The importance of pathogenic escherichia coli strains and emerging pathogens in drinking watertransmitted diseases is also briefly discussed. Objectives on completion of this manual you should have an understanding of. Microbes or microorganisms diseases caused by microorganisms diseases caused by bacteria, viruses, protozoans and fungi. A variety of clinical procedures such as tooth extraction, periodontal and endodontic treatment, may cause translocation of microorganisms from the oral cavity to the bloodstream. We normally think of pathogens in hostile termsas invaders that attack our bodies. A microorganism, or microbe, is a microscopic organism, which may exist in its singlecelled. Microorganisms microbes include bacteria, fungi, protozoa, some algae, viruses, viroids and also prions that are proteinacious infectious agents.
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