A medical microbiology lab performs testing on human samples collected from different body sites. The tests are used to detect and identify any microorganisms capable of causing disease. Knowing of unknown microorganism is important on how this microorganism works and how it is structured‚ means knowing how it can affect humans. The purpose of this study was to identify an unknown bacterium by applying all methods that were previously conducted and learned in the medical microbiology laboratory
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Terms to Know Decomposer - Breakdown of dead matter and wastes into simple compounds Prokaryote – No nucleus - microscopic‚ unicellular organisms‚ lack nuclei and membrane-bound organelles Pathogen - Microorganisms that do harm Eukaryote - unicellular (microscopic) and multicellular‚ nucleus and membrane-bound organelles alcohol - archaeobacteria - Prokaryotic single-celled organisms of primitive origin that have unusual anatomy‚ physiology‚ and genetics‚ and live in harsh habitats;
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MICROBIOLOGY What is the purpose of general growth media‚ selective media‚ and differential media? Give examples of each. General Purpose Media General Purpose media is designed to grow most organisms and do not contain growth inhibitors. Standard Methods Agar and Blood Agar Bases are examples of general purpose media. Differential Media Differential media contain a component that allow an observable change when a specific chemical reaction takes place. Simmons Citrate Agar is an example
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MRSA: MRSA is an acronym used to describe a strain of Staphylococcus aureus that is resistant to the killing effect of the antibiotic methicillin. Methicillin-resistant Staphylococcus aureus is often called a ‘superbug’ because it is very difficult to treat. It causes a huge number of infections every year in hospitals all over the world. MRSA occurs most often in the U.S. In Europe‚ the problem doesn’t seem quite as bad as in the U.S partly because of differences in the prescribing of antibiotics
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What is Staph? Staphylococcus aureus is a bacteria that is commonly found on a person’s skin and inside their sensitive mucous lined areas‚ such as the inside of the nose. Usually‚ it is harmless because of the natural protective barriers that the body has. But‚ if the skin has any damage done to it‚ such as a scratch or scrape‚ this bacteria can quickly invade the wound‚ which in turn causes a staph infection. Treating Staphylococcus Infections If the infection is on the surface of the skin‚
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Discussion The possible identity of the unknown organisms in the mixed culture was limited to bacteria that we had worked with previously in lab. Initially a Gram stain was conducted in order to distinguish the unknown bacterium as a Gram-positive and/or a Gram-negative organism (Lancaster and Bennett‚ 2012; Kellenberger‚ 2001). Based upon the results‚ both Gram-negative and Gram-positive bacteria were observed in the unknown mixed culture (Table 1 and Table 2; Kellenberger‚ 2001). In order
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CH4 Prokaryotic Cells No nucleus Plasma membrane Selective permeability lets molecules pass. Enzymes for ATP production. Photosynthetic pigment on folding (on chromatophores or thylakoids). Leakage occurs if damaged by alcohols‚ ammonium‚ and polymyxin antibiotics. Phospholipid bilayer‚ peripheral proteins‚ integral protein‚ transmembrane protein‚ sterols‚ glycocalyx Movement across Membranes Simple diffusion: Movement of solute from high concentration to low Facilitative diffusion: Solute
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Chapter 1. Microbiology – Diversity of Organisms Microorganisms- too small to be seen with the unaided eye “germ”- rapidly growing cell Microbes in our lives Pathogenic- disease causing Decompose organic waste Producers in ecosystem (photosynthesis) Produce industrial chemicals such as ethanol and acetone Produce fermented foods ( vinegar‚ cheese‚ bread) Produce products used in manufacturing (cellulose) and treatment (insulin) Designer Jeans: Made by Microbes? Stone washing- Tricoderma
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Staphylococcus aureus: From a Spot to the Hospital The hospital is silent this morning‚ as the sun breaks through the blinds and casts off all the silver objects in the room. My hospital bed is uncomfortable‚ and it makes me yearn for my 100-year-old mattress and many unnecessary plush-pillows. The smell of bleach and cleanliness lingers in my nose and almost makes me feel sicker. How did I end up here? Well‚ that is not an adrenaline rushed injury or a freak accident‚ but something that started
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Staphylococcus aureus (MRSA) Nasal Colonization and Infection Isolates in a Veterans Affairs Hospital Staphylococcus aureus (S. aureus) belongs to the genus Staphylococcus. It is Gram-positive‚ cocci shaped anaerobic bacteria that forms clusters and produces catalase‚ which catalyzes hydrogen peroxide to water and oxygen. It contains a cell wall structure (including peptidoglycan and teichoic acid) and a low G + C content of DNA between 30-40 mol %. (Bauman‚ R.‚ & Masuoka‚ E. (2015). Microbiology: With diseases
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