purpose of this experiment is to Learn and employ aseptic technique‚ to become familiar with basic requirements of microbial growth‚ to learn the basic forms of culture media‚ and to become familiar with methods used to control microbial growth. Bacteria Growth pattern after 24 hours Growth pattern after 48 hours L. acidophilus in liquid MRS broth No growth Amount of sediment grew over the marked line S. epidermis in liquid nutrient broth No growth Pellicle formed Procedure: After setting up
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eyeball" (Medlineplus). Corneal Ulcer has many different names‚ depending on the microorganism that causes the ulcer. Some of the major diseases include Bacterial Keratitis‚ Fungal Keratitis‚ Acanthamoeba Keratitis‚ and Herpes Simplex Keratitis. Bacteria‚ fungi‚ amoebae‚ and viruses are the prime cause for these diseases. These microorganisms settle in the cornea‚ grow‚ and feed on the cornea. This process causes a corneal ulceration. Contact lenses are the leading way these microorganisms enter
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the time it circulates. If some of these paper money are contaminated with pathogenic bacteria‚ there is a potential to spread these microorganism. Pope‚ et al (2002) mentioned‚ since bacteria‚ have been shown to spread from person to person via contact with fomites paper money‚ therefore‚ presents a particular risk of public health. Paper currency is commonly and routinely passed among individuals. Thus bacteria could be spread on the surface of paper currency. Paper currency‚ as asserted by
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Infections organisms: * Prokaryotes – cells without nuclei – bacteria * Viruses – which utilise biochemical machinery of host * Cancer cells – eukaryotic cells similar to host cells Bacteriostatic vs. Bacteriocidal * Bacteriostatic – antibiotics that inhibit growth and reproduction of bacteria without killing them * Relies on immune system to destroy bacteria * Bacteriocidal – antibiotic that kills bacteria * CFU = colony forming units Primary mechanism of Action
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Cells 1. Cell theory a. Outline the cell theory b. Discuss the evidence for the cell theory c. State that unicellular organisms carry out all the functions of life d. Compare the relative sizes of molecules‚ cell membrane thickness‚ viruses‚ bacteria‚ organelles and cells using the appropriate Sl unit e. Calculate the linear magnification of drawings and the actual size of specimens in images of known magnification f. Explain the importance of the surface area to volume ration as a factor
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Antibiotics are capable of can help our future generations‚ the second biggest user of Antibiotics are children‚ taking Antibiotics when having a viral infection can cause more health issues and can have long term effects. One of those effects being the bacteria becoming drug-resistant and multiplying to the point where it cannot be treated‚ parents and physicians are not taking the message seriously‚ this can have a huge impact on not only our own health but others too. The effects of Antibiotics can be
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(As) resistant bacteria isolated from As-contaminated groundwater Mahima Rani and Pinaki Sar* Department of Biotechnology‚ Indian Institute of Technology‚ Kharagpur‚ West Bengal–721302‚ India mahima06bt11@gmail.com‚ Ph: +91 8348523016 Abstract Role of plasmids in conferring resistance to several heavy metals and antibiotics to naturally occurring bacteria is well known. In contaminated environments‚ presence of metal resistant genes on plasmids often provide the other bacteria within the same
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M21 Essay: Diagnosis of an Infected Patient Essay As we know bacteria comes in various classes and are distinguished by their shapes‚ chemical configuration‚ source of energy either sunlight or chemicals‚ nutritional requisites and biochemical actions. We have a patient that may be infected with an unknown bacterial infection; we’ve collected a sputum sample and will be testing for one of the following genera: Bacillus‚ Escherichia and Mycoplasma. In order to determine which one of the three
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Chapter 27. BACTERIA & ARCHEA Overview: Prokaryotes thrive almost everywhere‚ including places too acidic‚ salty‚ cold‚ or hot for most other organisms Masters of Adaptation Most prokaryotes are microscopic‚ but what they lack in size they make up for in numbers There are more in a handful of fertile soil than the number of people who have ever lived They have an astonishing genetic diversity Prokaryotes are divided into two domains: bacteria and archaea Structural‚ functional‚ and genetic
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relative number of bacteria‚ Actinomycetes and molds. Results showed‚ that more abundant specie in soil sample were Actinomycetes and least abundant – molds. Samples of bacterial DAPI‚ wastewater flocculum and lake water were studied with a microscope in order to identify E. coli‚ filaments and phytoplankton for further analysis. A total of 5.72 x 106 E. coli bacteria were determined of the microscopy filter giving the first point on a growth curve. The growth curve suggests the bacteria entering their
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