 Name: Corrina Marcus Date: 7/27/13 Student Exploration: Water Pollution Vocabulary: bacterial pollution‚ nutrient pollution‚ sediment pollution‚ toxic pollution‚ water pollution Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. Water pollution is the addition of harmful substances to water. Some of these substances are found at home. What household chemicals might be harmful if not disposed of properly? Clorox‚ batteries‚ and cleaning supplies 2
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Under static conditions‚ decolourization of remazol red RB dye by bacterial isolates was more efficient than at shaking condition within 24 hours. In static condition transfer of oxygen is limited to the broth surface and the cell cultures will most likely sediment to the bottom of the flasks and become rapidly oxygen -
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part of the normal flora of humans‚ finding a suitable niche in virtually every anatomic site. The best known and most widely studied species is Corynebacterium diphtheriae‚ the causal agent of the disease diphtheria. History and Background No bacterial disease of humans has been as successfully studied as diphtheria. The etiology‚ mode of transmission‚ pathogenic mechanism and molecular basis of exotoxin structure‚ function‚ and action have been clearly established. Consequently‚ highly effective
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Introduction Bacterial transformation is the permanent alteration of a bacterial cell genotype as a result of its uptake and incorporation of foreign DNA fragments from external medium (Anthony et al‚ 2008). In addition to chromosome‚ bacterial cells often contain extrachromosomal DNA called plasmids which are capable of autonomic replication and antibiotic resistance (Dale & Simon‚ 2010). Plasmids can transport foreign DNA into host or other bacterial cells hence they are known as vectors.
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group‚ the control group‚ did not receive any treatment. The wounds were treated and observations were recorded daily. Bacterial counts were also performed on the swab samples taken from the wounds on the first‚ third and fifth day. The results of the bacterial count revealed that there was no significant difference between the Jatropha multifida and Betadine in preventing bacterial growth. Qualitative observations of wound size and healing time showed that Jatropha multifida latex is as effective
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Chapter 22: Oral and Gastrointestinal Diseases Question Type: Multiple Choice 1) Feces are composed about 50% by weight and volume of bacteria. Most of these are species of ________. a) Salmonella b) Escherichia c) Bacteroides d) Streptococcus Answer: c Difficulty: Medium Learning Objective 1: LO 22.1 Review the anatomy of the digestive tract as it pertains to microbial defenses. Section Reference 1: Section 22.1 Components of the Digestive system 2) Streptococcus form ________ ‚ polysaccharides
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The purpose of this lab is to successfully infiltrate E. coli bacterial cells with a pARA-R plasmid that is antibiotic resistant and has the rfp gene‚ or red fluorescent protein. This can be verified if the E. coli obtains the characteristics of the plasmid when it enters. To start‚ three Petri plates containing agar are needed. On each plate there is a control group and a treatment group; the treatment group being the one with the plasmid. Before the plasmid is put with the E. coli‚ first the bacteria
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every habitat on Earth‚ growing in soil‚ acidic hot springs‚ radioactive waste‚[2] water‚ and deep in the Earth’s crust‚ as well as in organic matter and the live bodies of plants and animals. There are typically 40 million bacterial cells in a gram of soil and a million bacterial cells in a millilitre of fresh water; in all‚ there are approximately five nonillion (5×1030) bacteria on Earth‚[3] forming a biomass on Earth‚ which exceeds that of all plants and animals.[4] Bacteria are vital in recycling
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evolution of antibiotic resistant bacteria and the effects it has on our entire biological community. Understanding the difference between viral and bacterial infections is a priority that needs attention-grabbing awareness on preventing the spread of resistant bacteria. Most colds‚ sore throats and ear or sinus infections are viral infections. Bacterial infections include strep throat‚ urinary tract infections and some wound and skin infections. Knowing what causes an illness is important because
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spinal cord. Bacterial meningitis is the most critical type of meningitis. The organism that is the source of bacterial meningitis lives in the nose (nasal) and throat (pharynx and larynx). People of all ages can carry them without being sick‚ however‚ they can spread the infection by sneezing or coughing. This infection needs instantaneous medical treatment or awareness due to the fact that it is a very serious infection. Haemophilus influenza type b is the very common cause of bacterial meningitis
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