Notes Chapter 1 - Microbiology Chapter 1 Class Notes E Colli provides vitamin K Microorganisms can cause non-infectious diseases(heart valve damage

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Microbiology – Chapter 1 Class Notes: E. Colli provides vitamin K Microorganisms can cause non-infectious diseases (heart valve damage, cancer, etc) Pneumonia virus/bacteria – multiple causes 10 microbes for every cell in our body. We are walking bacteria, colonized on skin, upper respiratory, large intestine, small intestine, genital tract, and ear to middle ear. We cannot survive without microbes Bacteria produce Vitamin K and digest food At 1700 bacteria lives. Sulfur smell is the output of the bacteria. The bacteria eat the gas and the output is the sulfur smell Bacteria can live on ice Bacteria eats sugar and turns it to lactic acid to make yogurt Environmental Microbiology: clean up an oil spill with bacteria that eats oil Rumen microbes in cattle and sheep allow them to breakdown/digest grass and hay Microbes double every 20 minutes All infectious diseases are caused by microorganisms More than 33 million people are living with HIV today HIV is transmitted by: semen, breast milk, blood, mucous, vaginal secretions, tears, saliva HIV can be transmitted to the fetus and is highly mutated virus, 50% infected are women AIDS is now the leading cause of death for Black women ages 25-34 and the second leading for Black men ages 35-44 Missouri has a 6.7 Morbidity Figure Salmonella ssp. Causes food poisioning Smallpox was eradicated from the human race. Virus= variola major. CDC has virus in a freezer in Atlana and Siberia, could be used as a bioterrorism agent Congenital disease syphilis = t. pallidum Mad Cow Disease – USDA largest beef recall. Makes brain dissolve and cows lost control of muscle Normal body temperature is 37C Augar – jelly in petri dish. Colonies of bacteria grow into the billions with in a 24 hour period We care mostly about microbes that grow at human body temperature. Microbes grow/double every 20 minutes on average Microbial communities: populations of cells rarely live alone. They form assemblages of different populations Free swimming in Microbial community: Clear broth becomes cloudy Biofilms in Microbial community: teeth have a film on the, catheter, glass of water develops a film Interactions between communities: Beneficial – cooperative feeding efforts (provides output for bacteria, may eat it) Harmful – waste product is inhibitory 1
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Microbiology – Chapter 1 Pathogen – biological agent that causes disease or illness to it host. Microorganisms cause disease Virulence: refers to the intensity of the disease produced by pathogens, and it varies among different microbial species. (Causes disease faster) The “bug” is caused by viruses – the tiniest of all microbes Microorganisms: bacteria Fungi Protozoa Algae Microorganisms are in us, on us and nearly everywhere around us. They are part of the human environment and are therefore important to human health. Many microorganisms capture energy from sunlight and store it in molecules that other organisms use as
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This note was uploaded on 01/22/2010 for the course MICRO Microbiolo taught by Professor Laurabean during the Spring '10 term at National American.

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Notes Chapter 1 - Microbiology Chapter 1 Class Notes E Colli provides vitamin K Microorganisms can cause non-infectious diseases(heart valve damage

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