Bacterial Diversity Project John FreesackSection A24 Kim Daffer‚ John Chang September 23‚ 2012 Introduction: Bacteria are everywhere. Some can be seen with the naked eye and some require a microscope but how do we distinguish one kind of bacteria from another? To answer this question‚ we were required to complete three bacterial labs that helped us to understand what microorganisms are and how to identify and classify them. Thus‚ the main purpose of this project is to identify our unknown microorganisms
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identify an organism from a mixture of two unknown bacterial species. In order to accomplish this‚ I first plated my unknown mixture on Tryptic Soy Agar (TSA)‚ Columbia Naladixic Acid (CNA)‚ and MacConkey’s Agar (MAC) plates. After 48 hours of incubation‚ it was unclear that two different bacterial colonies had grown on my TSA plate. Only one type of colony was evident. However‚ it was apparent that I had successfully isolated two different bacterial species by examining my MAC and CNA plates. Only
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The Effects of Antibiotics on Bacterial Growth Biology II 1996 Bacteria are the most common and ancient microorganisms on earth. Most bacteria are microscopic‚ measuring 1 micron in length. However‚ colonies of bacteria grown in a laboratory petri dish can be seen with the unaided eye. There are many divisions and classifications of bacteria that assist in identifying them. The first two types of bacteria are archaebacteria and eubacteria. Both groups have common ancestors dating to more
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Study of Bacterial Growth and Resistance Level to Certain Antibiotics INTRODUCTION Escherichia coli—better known as E. coli—is a gram negative‚ rod shaped bacteria. It is relatively harmless‚ but can occasionally cause food poisoning. It can also provide Vitamin K2. It prevents the establishment of pathogenic bacteria‚ and is associated with or found in the intestinal organ. The antibiotic that E. coli is resistant to is Penicillin. Bacillus subtilis—better known as B. subtilis—is known as
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BACTERIAL TRANSFORMATIONS USING PVIB II. INTRODUCTION Transformation is the manipulation of a bacterial cell’s DNA in order to alter the cell’s genotype or phenotype by absorbing free DNA from its surroundings. In this lab‚ pVIB plasmid will be used. A plasmid is a segment of DNA that can incorporate itself into the bacterial DNA. Although is not required for growth of the bacterial cell‚ plasmids can provide advantages in stressful environments such as the ability to adapt as environmental
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Many of the bacteria that cause common bacterial infection are mutating and therefore gaining resistance. This means that the original antibiotics that were once used to treat these common illnesses are becoming increasing ineffective. This resistance delays treatment as the original antibiotics are ineffective. This can lead to the disease worsening and even death. This means that common illnesses that were once easily treated by antibiotics are no longer so easy to treat. This results in increased
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inhibits the enzyme peptidyl transferase. This inhibition results to the prevention of the transfer of amino acid for growing peptide chains which leads to the inhibition of the formation of bacterial protein. (Michigan State University‚ 2011). Chloramphenicol is a broad-spectrum antibiotic. (Hitner et al.‚ 2016). Bacterial microorganisms become resistant by the inactivation of chloramphenicol through the enzyme acetyltransferases. (Rang et al.‚ 2016). Chloramphenicol resistance are very common in Staphylococcus
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Cause Bacterial meningitis can become serious even causing death in as little as a couple of hours. Those who are affected by this disease can recover for it. However‚ those who are unfortunate may have permanent disabilities including: hearing loss‚ brain damage‚ learning disabilities‚ etc. caused by the infection. There are a number of bacteria’s that result in meningitis such as: streptococcus pneumoniae‚ group B streptococcus‚ Neisseria meningitides‚ Haemophilus influenza‚ and listeria monocytogenes
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What is Morphology? LING 201 §Definition: the study of the construction of words out of morphemes Morphology Janice Fon The Ohio State University 1 Morphemes (I) 2 Morphemes (II) §Definition: smallest linguistic unit that has a meaning or grammatical function l l free morpheme: morphemes that can stand alone as words (ex) clock‚ sick bound morpheme: morphemes that always attach to other morphemes‚ never existing as words themselves (ex) -ly‚ non- Morpheme (according
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Bacterial Diseases of Fish by Robert B. Moeller Jr.‚ DVM California Animal Health and Food Safety Laboratory System University of California Aeromonas hydrophila (Bacterial Hemorrhagic Septicemia) 1. Gram negative motile rods 2. Effects many freshwater species and usually is associated with stress and overcrowding. 3. The clinical signs and lesions are variable. The most common finding is hemorrhage in skin‚ fins‚ oral cavity and muscles with superficial ulceration of the
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