Name Institution Date Bacteria and Archae Bacteria and Archae are two domains of organisms that share a lot of characteristics yet have astoundingly different features that separate them from two distinct classes of organisms. Perhaps the most vivid similarity between the two domains is the fact that they are both Prokaryotes. It means that both bacteria and Archae are single-celled organisms with no real organelles. Their nuclei are not membrane bound and so are their mitochondria. (Berg,
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| |Contains chlorophyll, a green pigment that traps energy from sunlight and gives plants their green color |Chloropasts | |Digests excess or worn-out cell parts, food particles and invading viruses or bacteria |Lysosome | |Small bumps located on portions of the endoplasmic reticulum |Ribosome | |Provides temporary storage of food
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us to learn about cultural, morphological and biochemical characteristics that are used in identifying bacteria. These characteristics and unique aspects can be observed by learning and using the various different tests and techniques, which is the main purpose here, and can help pinpoint the identity of the unknown organism. Each student will receive a slant containing one species of bacteria. The assignment is to verify the purity of the culture, maintain a stock culture, and identify the unknown
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sometimes be lethal. C. diff is very common in the elderly and patients on multiple antibiotics which causes the natural bacteria in the colon to be irradiated allowing opportunistic bacteria to invade. The New York Times reported that “Two factors typically lead to the infection: taking antibiotics, which make the intestine vulnerable, followed by exposure to the bacteria or their spores in a hospital, clinic or nursing home that has not been properly disinfected. Spores can survive for weeks
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manufacture or preparation, losing their initial characteristics, thus becoming unfit for consumption and even dangerous for human health and life. Food poisoning is a condition caused by food or drink contaminated with pathogenic microorganisms such as bacteria, viruses or parasites. In summer, due to high temperatures, such microorganisms multiply very rapidly perishable foods. The increased risk of contamination is mainly caused by improper hygiene conditions, cooking, improper food storage and preservation
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against Streptococcus pneumoniae. Two | |Frederick Griffith |strains, smooth edge (with polysaccharide capsule) and rough (without). S bacteria killed mice, R did not. Dead S | | |bacteria did not. Heat killed S. with the capsule did not. R bacteria mixed with heat-killed S bacteria killed mice. | |Vaccine |Material produced from weakened or killed microorganisms to stimulate an immune response and thereby
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of an organism’s characteristics. An organism’s enzymes, whether it has them or lacks enzymes, is determined by DNA codes. Ability to ferment specific carbohydrates is dependent on the enzymes that an organism has, and is the reason that not all bacteria are able to use carbohydrates for energy. References Alonzo, C. : Bacterial Morphology. A Laboratory Manual of Small-Scale Experiments for the Independent Study of Microbiology. Hands On Labs, Inc., Englewood,
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Combretum molle is an indigenous plant which produces phytochemicals which possess the ability to inhibit the growth of bacteria and have several biological activities like antioxidant, cytotoxic, anti-inflammatory, antiviral, antibacterial activities. These phytochemicals can be used in rotation with the conventional drugs since they possess a different structure which is new to the bacteria. Using phytochemicals as antibacterial agents from Combretum molle plant can be of great advantage since it is readily
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Cellular Structures and Pathogenicity Brittany McMahon ITT Technical College Cellular structures have different impacts on the ability for bacteria to cause disease. Mainly the cells external structures have the biggest effect to adhere to the cells to cause disease. One structure being the pili, a rigid, thin fiber made of protein that expands from the cell surface. The main function are to adhere specific bacterial cells to specific surfaces. There are typically only one or two pili per cell
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------------------------------------------------- Many Pathogenic bacteria are becoming resistant to antibiotics, explain how such adaptations can develop through the process of natural selection. Exam # 25010400 Exam # 25010400 January 17, 2016 kelsey duff January 17, 2016 kelsey duff Natural selection is the process that results in adaptation of a population to the biotic (living) and the abiotic (nonliving) environments. In the biotic environment organisms acquire resources through
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