DNA & RNA Jo Howell Biochemistry‚ Task 208.5.1 02-05 Western Govenor’s University Process of DNA Replication The double helix is unwound by helicase & each strand then acts as a template for the next strands Primase creates the DNA primer DNA polymerase III is the main copying enzyme DNA polymerase I removes RNA primers & replaces with DNA Single Stranded Binding Proteins are available to hold the unwound DNA strands in position & prevents premature annealing with another
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bacteria. Those tiny living creatures are remarkably intricate. Witnessing the breathtaking phenomena created by marine microbes strengthened my determination to further pursue my study of marine microbiology. In my first year as an undergraduate student I participated in lab work on marine microbiology. I led one project on separation and identification of pigment-containing bacteria in the Xiamen Coastal Areas‚
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By Felicia Jin ABC^2‚ Make-A-Wish and Chinese clubs sold Valentine grams and treats Feb. 9-13‚ bringing the “sweets to sweeties” and funding for good causes. The gifts were purchased during the week and distributed to classes today. ABC^2 (Academically Better Children’s Club) held a bake sale for the first time in the Main Hall and will be donating their proceeds to the St. Jude’s Hospital. “It’s hard to say how much money we’re trying to raise because it’s our first time‚ but we’re hoping for a
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learned so far in the microbiology laboratory class for the identification of unknown bacteria. The identification process can be completed with a series of deferential stains and biochemical tests. Creating a dichotomous key helps to limit the amount of biochemical tests done on an unknown organism and by observation and recording of data the unknown organism can be found. Materials and Methods The procedure for all tests performed was taken from Leboffe and Pierce’s Microbiology: Laboratory Theory
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microscopic examination of urine sediment. Microscopic examination of urine sediment may be warranted when macroscopic examination is positive for blood (Hb)‚ protein (greater than a trace)‚ nitrite‚ leukocyte esterase‚ turbidity‚ or glucose concentration greater than 55mmol/l. Choices for urinalysis are urine culture only‚ Macroscopic microscopic if dipstick positive‚ Macroscopic urine culture if pyuric or nitrite present‚ Macroscopic dipstick‚ Microscopic‚ or special case. (Association‚ 2011)
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the plasma clotted (gelled)‚ indicating a positive coagulase‚ which indicates S. aureus having followed the diagnostic scheme so far. the beta-hemolysis of this particular strain of S. aureus is not diagnostic of the species. Some strains produce the hemolysin‚ while others don’t. 5. B. Alpha hemolytic and small. (There is a greenish color of the red blood cells around the small colonies) 6. B. Perform a Gram stain. 7. D. Gram-positive cocci in chains. 8. C. Catalase test.
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explained through science. I have always been fascinated to know how things work and why or how they happen. That is why microbiology is perfect for me. I like finding out how or why something can happen and I can do that if I go into the field of science. I have been looking into colleges and professions recently and I have become very interested in microbiology. Microbiology is the study of microorganisms. Microbiologists try to understand the organisms and how they interact with their
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Habituation of Exploratory Behavior in Rats Regarding Spatial Rearrangement of Familiar Objects in an Open Field Habituation of Exploratory Behavior in Rats Regarding Spatial Rearrangement of Familiar Objects in an Open Field Habituation is Although it might seem obvious that rats would habituate to an unfamiliar environment after repeated exposure‚ it is not as obvious how behavior would change as
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The conventional method was conducted by placing 2.0641 grams of salicylic acid in a dry 125 mL Erlenmeyer flask. In a fume hood‚ 4 mL of acetic anhydride and 5 drops of concentrated sulfuric acid were added to the flask. The contents were swirled in the flask and then heated for 20 minutes in a hot water bath. After the 20 minutes were up‚ 10 mL of cold water were added in 1 mL increments. The flask was cooled for 10 minutes and occasionally stirred. The crystals that formed were collected via filtration
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Microbiology Home Assignment Student Name: Aisha Mohamed K-215810920 Lecturer Name: Dr. Faruk Sarkinfada Task 1: Describe the different classes of bacteria based on: a. Cell wall composition • :Gram negative . • Gram positive. b. Nutritional requirements : • Autotroghs:take nutrition from carbon dioxide. • Heterotrophs take the nutrition from organic carbon(carbs‚lipids‚protein) • Prototroph: take nutrition from sunlight. • Chemotrophic take nutrition from chemicals. c. Oxygen requirement
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