and antibiotics on bacteria. The hypothesis was that if bleach was used‚ it would be the most effective because bleach is commonly used to clean and disinfect various things. The variables that were tested were antibacterial soap and Scope mouthwash for the antiseptics; bleach and ammonia for the disinfectant; and Cipro‚ erythromycin‚ and tetracycline for the antibiotics. All of these chemicals were used on the bacteria M. luteus. Two Petri dishes were covered in the bacteria and split into four
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several test to determine what our unknown bacteria was. To determine this we recorded the results of how the bacteria reacted to different media. Depending on the results of each test we could narrow down the different bacteria to determine what our unknown is. This experiment will also determine if our bacteria is a fermenter of sugars and if it is catalase positive. If the bacteria is a fermenter they will use the sugars to make ATP. If the bacteria is a fermenter of lactose/sucrose the EMB
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stimulating the growth and/or activity of one or a limited number of bacteria in the colon‚ and thus improves host health.” Or “A selectively fermented ingredient that allows specific changes‚ both in the composition and/or activity in the gastrointestinal micro flora that confers benefits upon host well-being and health.” Types: Fructo-oligosaccharides: These are found in fruits like tomatoes‚ banana‚ and kiwi. They feed the good bacteria‚ and promote the absorption of vital vitamins and mineral like
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introduced to another living organism‚ like a human. Figuring out the type of bacteria could help with further experiments. The idea of the unknown bacteria lab is to show
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William Howard Taft Born: 9/15/1857 Birthplace: Cincinnati‚ Ohio William Howard Taft was born in Cincinnati on Sept. 15‚ 1857. A Yale graduate‚ he entered Ohio Republican politics in the 1880s. In 1886 he married Helen Herron. From 1887 to 1890‚ he served on the Ohio Superior Court; 1890–92‚ as solicitor general of the United States; 1892–1900‚ on the federal circuit court. In 1900 McKinley appointed him president of the Philippine Commission and in 1901 governor general. Taft had great success
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antimicrobial properties of garlic and mint and how effective they were. We were trying to see whether the bacteria will grow around the different plants. VARIABLES: Independent: type of plant used Dependent: the diameter in mm of clearing Confounding: room temperature‚ surrounding bacteria‚ concentration of plant solution HYPOTHESIS My hypothesis is that garlic will be least affected by the bacteria as it will be able to protect itself whereas‚ the control and the mint will be more susceptible to
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contaminated by bacteria. Bacteria can be difficult to sample and analyze‚ for many reasons. Natural bacteria levels in streams can vary significantly; bacteria conditions are strongly correlated with rainfall‚ and thus comparing wet and dry weather bacteria data can be a problem; many analytical methods have a low level of precision yet can be quite complex; and absolutely sterile conditions are required to collect and handle samples. The primary equipment decision to make when sampling for bacteria is what
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c------------------------------------------------- Evidence for Endosymbiotic theory: ------------------------------------------------- Evidence that mitochondria and plastids arose from bacteria is as follows:[13][14][15] * New mitochondria and plastids are formed only through a process similar to binary fission. * In some algae‚ such as Euglena‚ the plastids can be destroyed by certain chemicals or prolonged absence of light without otherwise affecting the cell. In such a case‚ the
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violet‚ basic fuchsin‚ or methylene blue. Simple dyes used to stain bacteria have a positive charge cationic (+)‚ therefore‚ they are attracted to the bacteria that are usually negatively charged anionic (-) Depends on the fact that bacteria differ chemically from their surroundings and thus can be stained with their environments Simple stains are used to provide contrast between specimen and background Differential Staining Bacteria react differently to the multiple reagents that are used i.e. Gram
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works as a therapeutic agent by destroys bacteria (bacteriocidal): it inhibits cell wall biosynthesis (by disrupting the normal balance between cell wall biosynthesis and degradation)‚ specifically binding to and inactivating enzymes that function to form the cross-linkages of peptidoglycan strands in bacterial cell walls (weakening said cell walls). Since cell wall expansion also requires the action of enzymes that degrade cell walls‚ exposure of growing bacteria to penicillin results in their lysis
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