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Chemistry Essay

Therapeutic polysacchraides
In some people due to the lack of the enzyme lactase, a condition known as lactose intolerance occur and these people are allergic to milk and milk products. Maltose consists of two α-D-glucose molecules with the alpha bond at carbon 1 of one molecule attached to the oxygen at carbon 4 of the second molecule. It is also possible that α-D-glucose molecules connected through carbon number one in a 1α→1 linkage resulting in Trehalose on the other hand Cellobiose which is a tasteless
Pages: 9 (2250 words), Essay
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Therapeutic Polysaccharides
Flowers with wide spreading and crinkled petal structures, of a monoecious variety possessing both male and female structures within a single plant. The fruit produced may vary in shape, but are broadly oblong or crookneck with a penduncle angle and wide apex. The oldest record of domestication of these plants is shown in excavated seed found in Mexico from about 5000 B.C as well as in Peru from 3000 B., demonstrating that the plant has been cultivated for a large period of human history
Pages: 8 (2000 words), Essay
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The Drug Diazepam in Pharmacology
The phenytoin concentration should be monitored in case of toxicity and the phenytoin dose should be adjusted as necessary (Australian Medicine Handbook 2011).Enhanced sedation or respiratory and cardiovascular depression may occur if diazepam or other benzodiazepines are combined with drugs that have CNS-depressant properties such as alcohol, antidepressants, sedative antihistamines, antipsychotics, general anaesthetics, other hypnotics or sedatives and opioid analgesics. The metabolism of
Pages: 17 (4250 words), Essay
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The use of isotopes in medicine
Through this information collected a proper and accurate diagnosis is given regarding a patient’s illness. Diagnostic techniques in most cases use tracers which are radioactive in nature for the body to release gamma rays. These tracers are short-lived but are judged with the role of checking particular physiological processes. The tracers can be administered orally or through injections after which a camera is used to detect them. Gagne, Leonard, and Rivard (2012) assert that through the
Pages: 5 (1250 words), Essay
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The use of isotopes in medicine
The artificial manufacture of radioisotopes is aimed at meeting their application in medicine. The radioisotopes used in medicine are known as radiopharmaceuticals. The following section describes three major applications of radioisotopes in medicines with the justification on why specific radioisotopes are used in the management of various medical processes. The disadvantages associate with the use of isotopes is also provided later in the essay.According to Ruth (2009, p. 537), isotopes are
Pages: 6 (1500 words), Essay
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The use of isotopes in medicine
C- 14 are radioisotopes hence can undergo a radioactive process at a specified rate of the half-life. According to the half-life rate, the proportion of decay is in such a way that the C- 14 to C-12 proportion is always constant. However, this is an unproven assumption that archeology attach to this theory of dating in order to assign ages to their discoveries (Van der Merwe, 2002). The theory is based on the changes that occur to a living organism when it dies and the process of decay
Pages: 5 (1250 words), Essay
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The importance of Hydrogen Bonding in Biology
Hydrogen bonds bind water molecules together constantly form and break; therefore, changing the temperature of water requires the constant addition or removal of heat. This makes water have a high specific heat capacity water and favourable in preventing temperature changes in the body. The hydrogen bonds in water are responsible for the high surface tension in water. The hydrogen bonds hold water molecules tightly at the surface. This allows dense substances to float in water and for insects
Pages: 4 (1000 words), Essay
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The Nobel Prize in Chemistry 1947
While at Oxford, he explored sex hormones and steroids. During World War II, he studied the properties of penicillin antibiotic, elucidated its structure, and also researched antimalarial drugs. His explorations also extended to explosives and petroleum. He was the president of the Royal Society and Commandeur de la Légion d’Honneur (“Sir Robert Robinson”, n. The British Empire also conferred him with a knighthood. In collaboration with Robert Burns Woodward, he founded the Tetrahedron
Pages: 4 (1000 words), Essay
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Techniques used in the separation and identification of chemical compound and their real world applications
The juice is then treated with chemicals to kill any fungi which is available in it. It is at this stage, where HPLC finds its use. This is because some of the chemicals always remain in the final product. In connection to this, HPLC is always used to determine, if there are any traces of the chemicals in the final sugar. If there are any, it is then taken back for treatment (Scoog &Holler, 1992).The main limitation of this technique is that it cannot be used for very complex chemical
Pages: 4 (1000 words), Essay
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Thermoplastic elastomer
WXFP and their respective composites showed the same trend as that of WXFN. This is an indication that as the clay content increases, the mobility of the nanofiller is decreased, providing low driving force for the intercalated polymer to break the tactoids. However, 2ME100-ODTMA showed orderly diffraction peaks in comparison to ME100, associated to interlayer distances of k4.2, and 1.6 nm, respectively. Extra peaks were as a result of longer range registration and interstratified
Pages: 5 (1250 words), Essay
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Tensile Lab ( paraphrasing )
Increasing loads were applied while staying right below the yield points. At every load, the force value as well as the extensometer reading was recorded. The recorded data was used for calculations.On each metal, some load was exerted. After calculating aluminium, the following were confirmed: yield stress was 314.47 MPa, the ultimate tensile stress was 341.47MPa, the true stress at fracture was 605.63MPa, the breaking stress was 266.89Mpa, %EL (percentage of elongation) was 15.8 percent and
Pages: 8 (2000 words), Essay
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The benefits and harmful of plastic
One of the renewable energy sources that are finding large application and attraction in the modern times is directly and largely dependent upon the usage of plastic. It is the solar energy systems and solar panels. The bulk of it is the plastic material used which is not only cheap in price, but light in weight and rightly suited to the usage for solar panels and other material used in the solar energy.Plastic’s another feature is its resistance to the heat and electricity. It is therefore
Pages: 4 (1000 words), Essay
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The scope and limitations of quantitative NMR
Hence, it can be said that the use of NMR for quantitative evaluation is not that common. Nevertheless, quantitative NMR can precisely and correctly evaluate the concentration of the analyte. The molecules could be in an intricate mixture or in a sample that has been purified. Quantitative NMR does away with the need for strenuous calibrations (Bohni, et al. Usually, the state of the samples for quantitative evaluation can be semi-solid state or in solid state. Research has helped in the
Pages: 5 (1250 words), Essay
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The nobel prize
Cells constitute the primary basic component of living organisms. Cells, therefore, have created interest among various scientists as they strive to comprehend the actual components of living organisms. In 1873, Ernst Abbe, a microscope specialist estimated the physical maximum limit of a traditional optical microscope resolution limit to be 0. William Moerner, Stefan Hell and Eric Betzig won the awards in chemistry as they were able to bypass the estimated limit. As a result of their
Pages: 4 (1000 words), Essay
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Toxicology, Drugs and Poisons
Microcrystalline testing involves combining a given amount of isolated sample with a specifically known chemical reagent. In the presence of a drug or poison, a chemical reaction will occur producing a precipitate. The precipitate structure and color varies in respect to the drug or poison that is tested. The precipitate that is formed can then be screened or viewed under a microscope for identity confirmation (Bell, 2009). This test is more accurate than color testing due to the more analysis
Pages: 3 (750 words), Essay
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The Experiment of B-Galactosidase Enzyme Activities
The absorbance was then read at550 & 620nm as a measure of cell growth using culture medium as once blank. The average values were tabulated in the table. The samples were chilled for about 2-3minutes and centrifuged at 3,500 rpm for ten minutes. They poured off and discarded the supernatant into the water bottle provided.
Pages: 6 (1500 words), Essay
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The use of Isotopes in medicine
In effect, the decay time is enough for the physicians to conduct any medical test.The use of the technetium-99 in the diagnosis of medical conditions has notable advantages, as well as, disadvantages. The property of technetium-99 as a pure gamma emitter is important in the analysis of the internal body parts. Gamma radiation produced by the isotope has energy levels that do not harm the human body (Roat-Malone, 2003). Hence, the radiations are safe and do not interfere with the normal
Pages: 4 (1000 words), Essay
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The Chemistry of an industrial process and its environmental impact
Once the alkene has been obtained, polymerization is carried out to form different products. Polymerization mainly results into long-chain molecules called polymers. Polyethene, for example, is formed through additional polymerization of ethene. The action is as shown below and takes place at 200oC and 2000 p.Plastic pollution in the ocean has raised concerns for quite a while, and research has shown that some forms of plastic undergo decay and produce toxic chemicals such as Bisphenol A
Pages: 4 (1000 words), Essay
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Test 1 - CHEM
The oxygen atom is partially negative while the Hydrogen atoms are partially positive since the Oxygen atom pulls the pair of electrons towards itself away from the hydrogen atoms.The partial positive Hydrogen of one molecule attracts the partial negative Oxygen atom of a neighboring molecule. Thus, neighboring molecules end up forming interlocking networks due to strong Hydrogen Bonding. Other substances may lack the Hydrogen bonding.Freezing causes water molecules to slow down and strengthen
Pages: 5 (1250 words), Essay
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The Biuret And Lowry Assay Techniques
Accordingto Kołodziejska, Sikorski and Niecikowska (1999), the Lowry method is based on two separate reactions. The first comprises formation of amide bonds with copper ion complex resulting into a reduced copper in alkaline solutions. Second is the reduction of Folin-Ciocalteu reagent by tryptophan and tyrosine residues.
Pages: 5 (1250 words), Essay
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