Antibiotic resistance results from bacteria changing in ways that make those antibiotics no longer useful. Resistance is a common yet problematic issue in treating pulmonary exacerbations or infections in people with Cystic Fibrosis (CF). Not all bacteria are bad. However‚ there are some that can cause infections. As bacteria are exposed to antibiotics over time‚ resistance may develop‚ and the number of antibiotics we have to kill the bacteria decreases as well. Thus‚ it is important to learn
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Bacteriophage is a term that means bacteria eater‚ it describes the agent’s ability to kill bacteria. Bacteriophages can infect and create more copies of itself inside of a bacterial host which is why they are considered pathogenic phages (Jassim et al‚ 2014). Overall‚ Bacteriophages are one of the most ordinary and unique organisms in the global sum of all ecosystems that can be used to make the world a healthier place to sustain human life. In today’s society the overuse of antibiotics
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Class Total Marks / 45 Assignment 1 1. Explain the principle of positive staining. (3 marks) Positive staining is done by staining the cell walls of Gram-positive bacteria with crystal violet. The cell wall of Gram-positive bacteria is made up of a thick layer of peptidoglycan which undergoes dehydration during decolourisation causing the pores to shrink. This shrinkage of pores traps CV-I complex and stain the cell purple. 2. Using a flow chart
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belongs to the domain bacteria. The species name‚ Bordetella pertussis‚
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What are probiotics? Probiotics are bacteria that help maintain the natural balance of organisms (microflora) in the intestines. An estimated 100 trillion microorganisms representing more than 500 different species inhabit every normal‚ healthy bowel. These microorganisms generally don’t make us sick; most are helpful. Gut-dwelling bacteria keep pathogens in check‚ aid digestion and nutrient absorption‚ and contribute to immune function. Probiotic therapies suggest that certain probiotics may help
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that I have been learned so far in the microbiology laboratory class for the identification of an unknown bacterium. The purpose of this lab was to identify two unknown bacteria cultures using various differential tests. The identification of these unknown cultures was accomplished by separating and differentiating possible bacteria based on specific biochemical characteristics. Whether the tests performed identified specific enzymatic reactions or metabolic pathways‚ each was used in a way to help
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classification of bacteria is important to make easier manipulation on the bacteria for various purposes such as for medical‚ research‚ developmental‚ and biotechnicalfieldsThe cell wall is the basis for classification of bacteria according to the Gram stain. Accordingto the chemical make up of bacterial cell wall‚ a staining procedure‚ Gram stain‚ helps usclassify bacteria into two subgroups‚ The cell wall can stain either positive or negative‚depending on its chemistry. If the bacteria stains positive
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University Biology 1510 Professor A. Hirons March 28‚ 2011 Abstract Antibiotic resistance is when microorganisms‚ such as bacteria‚ are able to survive an exposure to antibiotics and these bacteria are now resistant to the effects of these antibiotics. Antibiotic resistance in bacteria has been an issue since antibiotics were discovered. The fact that bacteria can become resistant to our medical treatments such as antibiotics is a natural evolutionary process‚ but there are certain human
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was investigated; gonorrhea passes from one person to another mainly through unprotected sexual activity. The causative agent for the disease‚ Neisseria gonorrhoeae‚ is a gram-negative coffee bean-shaped diplococci bacteria occurring in the form of two joined cells. The manner the bacteria initiate the disease is that Neisseria gonorrhoeae attaches to the epithelial cells which are
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industry bacteria and yeast are transformed with human genes of interest in order to produce therapeutics for human disorders. An example of pharmaceutical industries use of transformation is seen in the development of insulin‚ which is used to treat some forms of diabetes mellitus (2). In nature‚ many strands of bacteria genetically exchange genetic information during a process known as conjugation‚ and the new information is passed on subsequent generations. The advantage of using bacteria relates
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