developing drought and herbicide resistant crops. Through genetic engineering‚ scientists have been able to introduce traits into existing genes to make crops resistant to drought and herbicides. One good example is the use of Bacillus Thuringiensis‚ commonly known as Bt. Bacillus Thuringiensis‚ is a bacterium that dwells in soil. It acts as a reservoir “of cry toxins and cry genes for production of biological insecticides and insect-resistant genetically modified crops.” How has gene technology benefited
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Whooping Cough A. Name the bacteria that cause this childhood disease. What is its morphology? bacillus bordetella pertussis. B. pertussis is an extremely small‚ strictly aerobic‚ Gram negative‚ cocobacillus short rod. What does “Wooping Cough” mean? Pertussis is a highly contagious bacterial disease that causes uncontrollable‚ violent coughing. The coughing can make it hard to breathe. A deep "whooping" sound is often heard when the patient tries to take a breath. Describe in detail the
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the medium immediately surrounding the colonies after addition of iodine on PDA plate. Organism Result + or - Appearance/Observations Bacillus cereus Escherichia coli B. Gelatin Hydrolysis (gelatinase production) Note: whether the gelatin deep remains solid or has been liquefied Organism Result + or - Appearance/Observations Bacillus subtilis Escherichia coli C. Coagualse: identification of Staphylococcus aureus Note: whether the rabbit plasma has
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Diagnosis of latent TB relies on the tuberculin skin test (TST) and/or blood tests. Antibiotic resistance is a growing problem in multiple drug-resistant tuberculosis (MDR-TB) infections. Prevention relies on screening programs and vaccination with the bacillus Calmette–Guérin vaccine. One third of the world’s population is thought to have been infected with M. tuberculosis‚ with new infections occurring in about 1% of the population each year.[4] More people in the developing world contract tuberculosis
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vitro antimicrobial activity of Sudanese Cucumis melo L. fixed oil was investigated. Agar cup diffusion assay was performed against two fungal species (Candida albicans and Aspergillus niger)‚ two gram positive bacteria (Staphylococcus aureus and Bacillus subtilis) and two gram negative bacteria (Escherichia coli and Pseudomonas aeruginosa). Ampicillin‚ gentamycin and clotrimazole were used as positive controls. Antimicrobial activity was shown by all the species except E.coli and P. aeruginosa. Oil
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Wars have been occurring since the dawn of time. Wars are states of armed conflict between societies that bring death‚ destruction‚ merciless slaughter and butchery‚ and starvation‚ poverty‚ ruin and disease in its wake. Apart from casualties during wars‚ a significant cause of death during most wars is disease. A clear example of this is the Mexican War of Independence. It was much more difficult to prevent deaths from tuberculosis during this war because of lack of knowledge of the disease‚ a
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Tuberculosis is an infectious disease that triggers the formation of small swellings on mucous membranes. The disease itself is caused a bacillus called Mycobacterium tuberculosis and mainly affects the lungs‚ however the central nervous system‚ the lymphatic system‚ the circulatory system‚ the genitourinary system‚ bones‚ joints and even the skin also has a chance of being affected. Our body’s immune system responds to this infectious disease by having a group of white blood cells to try to identify
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CHAPTER I INTRODUCTION Background of the Study Mangrove swamps are forested intertidal ecosystems that occupy sediment-rich sheltered tropical coastal environments. By trapping and stabilizing fine sediments‚ mangroves control the quality of marine coastal waters. Aside from maintaining coastal food webs and populations of animals‚ mangroves have an important role in pollution control through their absorptive capacity for organic pollutants and nutrients‚ and they play an important role in storm
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History of DNA Technology During the early1960s‚ there was great progress being made in beginning to understand the structure of genes and the mechanisms of their replication‚ expression‚ and regulation in prokaryotes and the viruses that began to infect them (Berg 2010). However at the time it was still unknown as to whether or not these findings applied to eukaryotes. This is because the tools used at the time for exploring genetic properties were not fit for the task. By the spring of 1972‚ the
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Anthropology 1: Human Evolution Recombinant DNA technology is defined as a series of procedures that are used to recombine DNA segments. A recombinant DNA molecule is constructed from segments of two or more different DNA molecules. Under certain circumstances‚ a recombinant DNA molecule can enter a cell and replicate‚ either on its own or after it has been integrated into a chromosome. Some examples of DNA technology are the insertion of bacterial DNA into certain crops‚ cloning‚ and genetically
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