Bacteria Essay Samples and Topic Ideas
bacteria, and parasites. Some of these diseases include Hepatitis A, Toxoplasmosis, Vibrio infection, Shigellosis, and Listeriosis. Listeriosis Listeriosis is a bacteriological disease brought about by Listeria Monocytogenes. In some cases, it is as a result of L. grayi and L. ivanovii. Listeria is known to cause bacteremia to people with weak immunity, pregnant women and elderly (Scholing et al. 217). Additionally, infections to the central nervous system (cerebritis, brain abscess, and meningitis) are also common. Between 2004 and 2005, cases of Listeriosis in the United States were estimated at 2.5 – 3 per a million population; with pregnant women accounting for up to 30% of all cases. The...
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bacteria feed on courtesy of the genes present in the T-DNA which is in a plasmid form made up of a close circle having extra- chromosomal DNA instead of the bacterial chromosome. As such, it can easily be manipulated after isolation to remove the genes that will be used for insertion into a plant through the working of the wild Agrobacterium and furthermore replacing them with the novel genes (Halford & Shewry, 2000). The new plant becomes infected with modified Agrobacterium making the whole plant to be replicated from the GM tumor –like cell clumps commonly called callus by utilizing plant hormones. The second method widely used in genetically modifying crops is particle bombardment....
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bacteria on the steak is usually on the surface, and the heat used in cooking the steak will destroy the bacteria. On the other hand, ground meat may carry pathogenic bacteria in the meat, thus posing a health hazard to the consumers of the hamburger. Scenario 2 Causes of Sally and his family’s illness Putting the chicken out three hours on the counter to marinate may have allowed pathogens to find their way into the chicken. This was very dangerous since, within that period, pathogens got time to grow on the meat since the temperature was favorable with enough oxygen. She also served a marinade that contained raw meat which was already contaminated. She would have marinated the chicken in the...
bacteria is unrefrigerated or improperly refrigerated meat, egg salad, potatoes among other types of food. Describe the temperature danger zone. The aim of refrigerating is to ensure food remains under a temperature that does not allow quick bacterial multiplication. Temperatures between 4o and 60o allow rapid growth of bacteria. Thus this is called the "danger zone." Hot and freshly cooked food must be kept at a temperature not less than 60o c. However, the food should be cool enough to be stored in the refrigerator within two hours, and it should not exceed this period. How could Martha have sped up the cooling process of the lasagna? For rapid cooling of food, it should be divided into large...
bacterial flagellum. In the documentary, Michael Behe who believes in Intelligent Design, explains that the flagellum, a structure that enhances the movement of bacteria, is too complex and is made up of several pieces that it cannot function with even a single missing component (Lasser, N.p). Therefore, the intelligent design argues that these pieces did not evolve over a period. Because there is no evidence to prove mutation and/or adaptation of each of these pieces, the proponents of intelligent design, therefore, concludes that the whole system must have come into existence as a single unit and thus there must be an intelligent agent involved in its design. The argument by proponents of...
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bacteria, eukaryotes, and archaea. They bind loosely to these active sites, unlike other cofactors. They recognize, attract or repulse a product or a substrate. Unlike enzymes, coenzymes cannot function on their own. They have to work alongside enzymes to increase the rate of biological reactions in the body. An example is vitamin B which assists in the formation of proteins and fats (Frey and Hegeman). Q5.when the substrate of the enzyme is almost entirely used, the rate of the chemical reaction reduces. At this time, the enzymes are in excess as compared to the substrate and therefore some of the active sites of the enzymes have no substrate to work on. Before this stage, all the substrate was more...
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bacterial infections among humans and animals. It would be unfair to ignore the benefits penicillin and other antibiotics play in the fight against bacterial infections, preventing the spreading of diseases and minimizing some diseases from developing into acute or chronic cases. Antibiotics work by preventing bacteria from multiplying through reproduction or killing them. According to Christian, the human body is designed with an immune system that is composed of white blood cells for fighting harmful bacteria. There are occasions the immune system is not in a position to counter bacterial infections and this calls for antibiotic usage but caution should be taken to avoid misuse and overuse of...
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bacteria to include Aspergillus fumigatus (RCMB 02568), Salmonella typhimurium (RCMB 010315), Mycobactrium tuberculosis (RCMB010120), Klebsiella pneumoniae (RCMB 0010093), Escherichia coli (RCMB 010052), Bacillis subtilis (RCMB 010067), Streptococcus pneumoniae (RCMB 010010), and Staphylococcus aureus (RCMB 010027). For the gram negative bacteria, antibiotic penicillin was applied as the standard reference while gentamicin was applied for gram positive bacteria. Amphoteric B was applied for all bacteria samples as the standard antifungal control. The synthesized compounds were then collected by dissolving in DMF at concentrations of 1 mg mL-1 and 5 mg mL-1 before commencing testing. Evaluation of the...
- Words: 1100
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