Sampling of Gram-Positive Bacteria and Antibiotic Resistance Resting We thought it would be interesting to find out the different bacteria that grow on things we use on a daily basis and the level of antibiotic resistance that those bacteria have. We chose to swab the toilet seat in the MATC women’s bathroom and the ATM machine in the commons area on campus. We were certain the ATM would be dirtier than the toilet seat since the bathrooms get cleaned every day. The first step we took in testing
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15 January – About 6 million are unemployed in Germany. 25 February – Adolf Hitler obtains German citizenship by naturalization‚ opening the opportunity for him to run in the 1932 election for Reichspräsident. 10 April – Paul von Hindenburg is elected president of Germany. 30 May – Chancellor Heinrich Brüning resigns. President Hindenburg asks Franz von Papen to form a new government. 14 June – Bans against the SS and SA are overturned. 17 July – Altona Bloody Sunday: In Altona‚ armed communists
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time) 3. Clean your surface with disinfectant to sterilise your lab work surface‚ this will prevent contamination but leave the disinfectant to stand up to 4 minutes so it can penetrate the harder capsules of some bacteria. 4. Using a sterile pipette with draw some of your bacteria culture from the bottle making sure you flame the neck of the bottle to keep the procedure sterile. Place what you have withdrawn on to an agar plate. 5. then get your glass sterile spreader out of the packet making
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HAZARD IDENTIFICATION‚ RISK ASSESMENT AND RISK CONTROL (HIRARC) In recent years‚ Hazard Identification‚ Risk Assessment and Risk Control (HIRARC) has become fundamental to the practice of planning‚ management and the operation of a business as a basic of risk management. The organizations that have carried out risk assessment at the work place have noted numerous changes in their working practice. Those who have already carried out risk assessment in their work‚ have reported positive changes
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Pollution problems that are serious but that are relatively unknown Many kinds of pollution exist worldwide. Many familiar pollution problems are known to many people such as pollution from the garbage‚ air pollution from cars and industry‚ pollution released into water from the factories and so on. There are many occurring spots worldwide that serious pollution problems have taken place‚ but do you wonder where those places are? Some of the significant scenes are worth knowing. Here are some scenes
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Identification of a Hydrate Based on Percent Water Varun Wadhwa 11/19/12 Introduction The identity of an unknown hydrate was determined by massing the hydrate before and after heating and calculating the percentage of water. Procedure First‚ we cleaned‚ dried and heated an evaporating dish for five minutes on an iron ring with the Bunsen burner and massed it. Then‚ we added 2 grams of an unknown hydrate and calculated the mass of that. Next‚ we used gradually increasing heat for
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Separation and Identification of Plant Pigments by Paper Chromatography Biology 1107L Introduction All living organisms require energy for their chemical processes. The ultimate source of this energy is the sun. Plants convert light energy into the chemical energy of sugars. During photosynthesis pigments are used to capture light energy. Pigments of green plants can easily be separated and identified using a technique called paper chromatography. The purpose of this
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Fermented food‚ enjoyed across the globe‚ conveys health benefits through lactic acid fermentation. The fermentation process can transform the flavor of food from the plain and mundane to a mouth-puckering sourness enlivened by colonies of beneficial bacteria and enhanced micronutrients. While fermented food like yogurt‚ sauerkraut and kefir are well-known many other lesser-known foods also benefit from the lactic acid fermentation process. Indeed‚ virtually every food with a complex or simple sugar content
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Norway Rats: Facts‚ Identification & Control Latin Name Rattus norvegicus Appearance Norway rats are large rodents that may weigh in excess of 500 grams. They can reach lengths of 40 cm‚and their tails alone may measure 21 cm. The body of the Norway rat is covered in shaggy fur that is brown or gray in color. The ears and tail are covered in scales‚ and the tail is shorter than the head and body. Droppings are capsule-shaped. Behavior‚ Diet & Habits Norway rats typically nest in underground burrows
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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. 9. B. Streptococcus 10. B. Optochin (P disk) 11. this test is used to differentiate different types of alpha-hemolytic streptococci. 12. A. It is viridans streptococci 13. there was no inhibition of bacterial growth around the P disk. This is indicative
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