What Is Microbiology? Microbiology is the study (logy) of very small (micro) living (bio) things. Microbiology is the study of microorganisms. These "bugs" include: bacteria (that’s the Latin plural for bacterium); viruses (that’s the non-Latin plural for virus - virii sounds weird‚ so I don’t say it); and‚ fungi (that’s the Latin plural for fungus - which by now you have guessed‚ or already knew‚ and may not be all that interested to know‚ anyway). Microbiology is actually made up of several
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of human history‚ this began with maternal transmission of beneficial microbes during passage through the birth canal — mother to child. However‚ the alarming increase in the rate of Caesarean section births means a potential loss of microbiota from one generation to the next. And for most of us in the industrialized world‚ the microbial cleansing continues throughout life. Nature’s dirt floor has been replaced by tile; our once soiled and sooted bodies and clothes are cleaned almost daily; our muddy
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plates‚ tweezers‚ and sterile disks. Other materials needed are: Escherichia coli‚ Streptococcus epidermis‚ distilled water‚ ninety five percent ethanol‚ Procedure To begin this experiment‚ one should take the sharpie and one plate case‚ and draw a line straight down the middle. Label one side "phone without hand washing" and the other "phone with hand washing ". On the second plate label it as "control group (hand washing only)". Also‚ make sure the name of the experimenter and the date
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observed the movement of bacteria towards the chloroplasts in a strand of “Spirogyra” algae. Engelmann hypothesized that the bacteria were moving in response to oxygen generated by the photo synthetically active chloroplasts in the algae. This was one of the first documented observations of positive aero taxis in bacteria. In 1882‚ he performed his famous action spectrum experiment using a device designed and built by Carl Zeiss. The modified microscope had a prism which could produce a microscopic
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Ch. 1 Prokaryotes = bacteria ‚ archaea Eukaryotes = Fungi‚ protozoa ‚ algae (Growth:: Mitosis有絲分裂) Bacterial cell → Bacillus(rodlike) ‚ cocus (spherical)‚ spiral (curved) *P.S. 有時會star-shaped or square → 出現既形式: pairs‚ chains‚ clusters cell walls of bacteria → peptidoglycan (carbohydrate & protein complex) cell walls of plant and algal cell → cellulose Growth::Binary fission = bacteria reproduce by dividing into two equal cells bacteria 吸收nutrients from dead / living organisms/ photosynthesis
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Week One Exercise Solutions -Set A 1. Recognition of normal balances | | | | | | The following items appeared in the accounting records of Triguero’s‚ a retail music store that also sponsors concerts. | Classify each of the items as an asset‚ liability; revenue; or expense from the company’s viewpoint. Also indicate the normal account balance of each item. | | | | | | Classification | Normal Balance | a. The albums‚ tapes‚ and CDs held for sale to customers. | A | Debit
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associated with consumed foods such as plants and animals in case of an allergen or a contamination outbreak. This analysis was done by utilizing all of the proper methods taught thus far in the microbiology laboratory for the identification of two unknown bacteria. An unknown labeled as number 3 was given out by the lab instructor. The methods that have been lectured and absorbed pertaining to identifying
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Microbiology Lab ReportPractica #1BTC307LAmber AmelingmeierThursday‚ September 18‚ 2008OBJECTIVESIn this lab experiment two different types of bacteria‚ Escherichia coli and Staphylococcus aureus‚ were grown singly and mixed on four different types of agar in order to observe the varying morphologies within the colonies. Resulting data was analyzed to provide understanding of the use of differing culture media and conditions for bacterial growth. RESULTSFour different agar types were used in this
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MATERIAL SAFETY DATA SHEET (MSDS) FOR PORTLAND CEMENT (Complies with OSHA and MSHA Hazard Communication Standards‚ 29 CFR 1910.1200and 30 CFR Part 47) CEMEX‚ INC. CEMEX CALIFORNIA CEMENT LLC VICTORVILLE CEMENT PLANT 16888 NORTH "E" STREET VICTORVILLE‚ CALIFORNIA 92394-2999 Section 1 - IDENTIFICATION Supplier/Manufacturer Emergency Contact Information CEMEX‚ Inc. CEMEX California Cement LLC Victorville Cement Plant 16888 North "E" Street Victorville‚ California 92394-2999
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is based on the concept that if you compare the same (that is‚ homologous) protein from many different species‚ you can see that some amino acids readily substitute for each other and others almost never do. * Results are arranged with the best ones on top * The most important score is the Expect value‚ or E-value‚ which can be defined as the number of hits any random sequence (with the same length as yours) would have in the database. * E-values for good hits are usually written something
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