four time‚ propose is to isolate the unknown bacteria. Therefore‚ the first time to streak on the plate‚ there are million of bacteria on the loop. For that reason‚ we need to sterilize the loop before next streaking. Then we can get small group of colonies out from the large group of colonies to observe and distinguish the unknown bacteria. 2. Define pure culture‚ a mixed culture? Ans: Pure culture is mean that only contain single species bacteria in the culture. If we plate out it onto the
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Hand Soap Effectiveness on Escherichia Coli Abstract: Bacteria are an essential part of many different living organisms and ecosystems across the globe. Without bacteria there would have never had been life in the first place. But some bacteria have evolved to cause to humans‚ resulting in the need to eliminate them through such methods as soap. Hand soap is a crucial part of human health‚ especially in such places as schools and hospitals. In this experiment I wanted to determine the effectiveness
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Eyes How do bacteria cause disease? • Bacteria cause disease by producing harmful chemicals‚ which are toxins of enzymes. These toxins kill or damage body cells. The damage to the body cells causes the symptoms of the disease. How does the structure of bacterial cells differ from that of human cells? • Bacterial cells have a slightly different structure than that of human cells. These structural differences are important because they allow antibiotics to kill bacteria without killing
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altered bowel movement following an increased water content‚ volume and/or frequency of stools. Infectious diarrhoea is usually linked to vomiting‚ nausea or abdominal cramps. When foreign bacteria‚ viruses or parasites enter the body‚ they cause infectious diarrhoea. Bacterial infections are caused by consuming bacteria‚ such as‚ Shigella‚ Salmonella‚ Escheria coli (E.coli) and Camylobacter via contaminated food or water. Many viruses such as rotavirus‚ norovirus and viral hepatitis can cause diarrhoea
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DEBATE: New Strains of Drug-Resistant Bacteria In 1969 when Dr. William H. Stewart claimed that the war against pestilence was won‚ he had no idea how wrong his statement was. Were he able to see what the future of antibiotics held‚ he would never have said‚ “It is time to close the book on infectious diseases‚ and declare the war against pestilence won”. He was completely oblivious to important aspects of antibiotics including their ineffectiveness on viruses and the potential harm that
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leading cause of an infection. The microbes are to stop with the growth and more reproduction of the organisms such like bacteria‚ fungus‚ viruses‚ and parasites. 2. Do all bacteria respond the same to a given antimicrobial? Explain your answer a. They don’t‚ they have an antibiotic resistant. Antibiotics are there to kill and stop the growth of bacteria cells. The bacteria respond differently to the microbe. It can change its morphology‚ molecular components‚ gene expression‚
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genetic transformation that was used in lab and mainly used due to the single celled nature of bacteria. In this lab‚ the engineered pGLO plasmid is integrated into E. Coli bacteria‚ and adds the genes which code for the proteins GFP in the modified bacteria’s genome (Hanahan‚ Studies on transformation of Escherichia coli with plasmids‚ 1983). To see the reaction of this plasmid on the cells‚ bacteria treated with the plasmid were grown on two separate agar plates containing LB nutrient broth and
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Aseptic Technique and Culturing Microbes Lab 3 Brittney Case August 4th 2013 Section: Mic 101 Microbiology Session 1 Abstract: The Purpose of this experiment is to gain knowledge of how to properly use aseptic techniques to transfer cultures‚ learning about cultured media and how to distinguish various types of microbial growths as well as what is required for them to grow properly. Hypothesis: This exercise will allow me to gain knowledge of how to properly use aseptic techniques
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is part of the tetracycline class of antibiotics that fights bacterial infections‚ like urinary tract infections. This drug is also known as a broad-spectrum antibiotic that treat all types of bacterial infections (Drugs.com‚ 2015). Malaria has a bacteria agent called Plasmodium falciparum that causes an individual to experience fevers and high chills. Doxycycline would be able to treat malaria because it is an antibiotic. Doxycycline is taken by mouth in the form of 50 mg‚ 75mg‚ or 100 mg capsules
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Salmonella 1) What is the infectious agent (Pathogen) that causes this infectious disease? The infectious agent (pathogen) that causes salmonella is called salmonella enteriditis. The bacteria is larger than a virus; but‚ is visible to the eye with the microscope. It is rod-shaped‚ gram negative‚ non-motile bacteria that does not form spores. It infects the cell‚ multiplies within it; then‚ bursts the cell. Special effector protein factors are required for salmonella intestinal invasion and the induction
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