swabbed and the microbes transferred to the appropriately labeled section marked #1 of the agar plate. Surface #2 was the inside of the toilet lid. It was swabbed and the microbes transferred to the appropriately labeled section marked #2 of the agar plate. Surface #3 was my fiancé’s toothbrush. It was swabbed and the microbes transferred to the appropriately labeled section marked #3 of the agar plate. Surface #4 was the corner of the bathroom tub. It was swabbed and the microbes transferred to the
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ASEPTIC TECHNIQUES AND SOURCES OF MICROBIAL CONTAMINATION. Introduction The spread of infections has come to a point where it has become catastrophic. Aseptic technique is the method used to prevent contamination of infections. It is widely used in hospitals‚ pharmacy‚ and pharmaceutical industries and in laboratories. Different establishments have come up with more ways to improve infection control. In hospitals health care acquired infections are costing the NHS £1 Billion a year and
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organisms that cannot be seen with unaided eyes Microorganisms or microbes They are virtually everywhere - ubiquitous Types of Microorganisms Bacteria Fungus Yeast & molds Bacillus E. coli Algae Archaebacteria Diatom Dead Sea salt pillar Protozoa Virus Paramecium HIV 1 Why study microbiology? W e have trillions of living microbes in our bodies – indigenous or normal microflora 3% known microbes are disease-causing (pathogens) Essential for life on planet e
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explain the mass extinction of large mammals in some areas? He explains the existence first and then explains how the dates of their extinction scientifically match the dates that hunters where in that area. “Whether coincidentally or not‚ that date is identical‚ within experimental error‚ to the date of Clovis Hunters’ arrival in the Grand Canyon area. (Page 47) 5. What argument about the mass extinction of large mammals does Diamond argue against? He argues the theory of the mass extinction happening
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Voges-Proskauer‚ and Citrate utilization. The indole portion of this test will not be performed since U45 was determined indole negative with the SIM test. The methyl red portion of the IMViC tests utilizes methyl red as a pH indicator and indicates whether a microbe uses the mixed acid fermentation pathway. If the pH falls to 4 or lower (acidic)‚ the indicator turns red‚ signaling a positive result. If the pH rises to 6 or above‚ the indicator turns yellow‚ signifying that the microorganism is negative for mixed
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Organic mixture will have to provide the microbes with the correct balance of carbon and nitrogen. The ideal ratio for a composting mixture is accepted to be C:N 30. * C:N ratios within the range of 25:1 to 40:1 result in an efficient process. * High C:N ratio - without adequate nitrogen‚ microbes lack the tools required to break down carbon sources. The process will proceed very slowly. * Low C:N ratio - nitrogen in excess of what the microbes need to break down the available carbon can
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1. Pathogen. For an infection to occur‚ a microbe capable of causing disease must be present. 2. Reservoir. Reservoir is a French word that means “storehouse.” Here‚ we are using it to mean a place where microbes can grow and multiply. Possible reservoirs for microbes include the bodies of people and animals‚ bodies of water‚ and food. 3. Portal of exit. Portal comes from the Latin word for “gate.” For an infection to occur‚ the microbe must have a way of leaving the reservoir‚ or a portal of exit
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1: The Microbial World and You Learning Objectives Go Over First Lecture 1-1 List several ways in which microbes affect our lives. 1-2 Recognize the system of scientific nomenclature that uses two names: a genus and a specific epithet. 1-3 Differentiate the major characteristics of each group of microorganisms. 1-4 List the three domains. 1-5 Explain the importance of observations made by Hooke and van Leeuwenhoek. 1-6 Compare spontaneous generation and biogenesis. 1-7 Identify
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Year 12 Nutrition Stage 2 SACE: Practical – Manipulation of Microbial Growth | August 25 2013 Hypothesis: The hypothesis for this particular practical experiment is that‚ as the pH decreases or increases from neutral pH of approximately 7‚ the amount of microbial growth on the agar solution will decrease Materials: Agar Solution Preparation: *hand sanitizer/ hand wash soap *small container *1g of agar powder *0.25g of beef extract stock *60mL of heated water *electronic balance *small
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Study Guide Chapter 1: The Main Themes of Microbiology 1. Define Microbiology. The area of biology that deals with living things ordinarily too small to be seen without magnification. 2. Discuss the impact of microbes on earth. 3. List the 6 categories of microbes. Bacteria – Ecoli Viruses – Influenza Fungi –Candida albicans Protozoa –Entamoeba histolytica Algae – Diatoms Helminths -Tapeworm 4. Define Microbiology’s subcategories. Bacteriology Mycology Protozoology
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