CHEM3412 Synthesis of a Porphyrin Porphyrins are hetereonuclear‚ macrocyclic compounds that play an important role in living organisms. Examples include the non-protein heme portion of hemoglobin in animals whereby the lone pairs on nitrogen can bind to the oxygen-carrying iron. In plants‚ chlorophyll uses the vast conjugation to allow absorption of light for photosynthesis. The characteristic colors of porphyrins is also due to the conjugation. An examination of the porphyrin structure
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Lab 1: Synthesis of Aspirin Introduction: The purpose of this lab was to demonstrate the ability to easily alter the molecular structure of a compound to greatly increase its utility. In this case‚ an acetyl group was added to salicylic acid‚ a naturally occurring compound with significant pharmaceutical value. Without the addition of the acetyl group‚ salicylic acid is an irritant to the gastro-intestinal (GI) tract. Once the acetyl group is added via a simple reaction‚ acetylsalicylic
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Identifying sites of protein synthesis in Chlamydomonas using erythromycin and cyclohexamide as protein synthesis inhibitors. October 16‚ 2009 Introduction: In living cells‚ prokaryotic or eukaryotic‚ the synthesis (construction) of proteins is accomplished by similar machinery. Amino acids‚ ribosomes‚ messenger RNA (mRNA)‚ and transfer RNA (tRNA)‚ are all necessary for the building of functional proteins in a cell. Ribosomes are the site of protein synthesis in a cell‚ and there are two
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There has been a significant decline in mortality from breast cancer since the 1970s‚ this decline is linked with the fact that there is more availability of screening methods‚ mainly mammography‚ and there is a drastic improvement in the way advanced cancer is treated (Smith et al.‚ 2008). Dr. David Eddy‚ an early pioneer in evidence-based medicine conducted a study for the American Cancer Society (ACS) to develop recommendations for screening for cancer which was later reviewed by him and published
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An individual is defined as being evil when he or she is being morally wrong or bad‚ and their actions are to be described as being wicked. However‚ in a cultural or religious aspect‚ one would declare that stealing and/or murder are wrong‚ likewise forbids idolatry and blasphemy. In “The Cask of Amontillado”‚ published by Edgar Allan Poe‚ the narrator goes through certain discomforts‚ like being insulted in a way of that hurts his pride. Throughout the text‚ the narrator with goes through stressful
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The internet still remains in it’s infancy. With it’s limitation of possibilities drifting further and further from the grasp of it’s creators every day‚ it becomes hard to decide how such a vast public domain should be regimented. The difficulty with effectively approaching such a matter lies in the fact of the internet’s availability to almost every living soul throughout the modern world. Like it or not‚ everyone that has internet access can obtain a good look into the private lives of others
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These 3 known and unified forces are the Strong Nuclear Force‚ the Weak Nuclear Force‚ and the Electro-Magnetic Force can be merged into a single force at the grand unification energy of 1016 GeV. However‚ this model of the universe is not complete since Gravity is still impossible to unify with the 3 other forces. In 1687‚ Isaac Newton postulated the first model explaining gravity between astronomical objects and showed how it’s was inversely proportional to the square of the distance between two
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February 27th‚ 2012 Analytic Paper #3 “Although our war on drugs must be fortified with the best laws‚ enforcement efforts and resources‚ we would not be successful without your individual commitment to this cause.” -- Mel Carnahan Just say no? The legalization of drugs has been a huge issue in politics for an exceptionally long time. Many people believe that the legalization of drugs will allow the government to gain more control and therefore reducing crime on the streets. The idea that a state
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Euripedes’ Medea is often regarding as one of the most groundbreaking and innovative Greek tragedies. Elements such as feminine power and familial betrayal shocked the audience when the play was performed‚ as Greeks were used to a common threads of male authority and innocence of children within their plays. Euripides chooses to craft his female protagonist as someone who defies gender roles‚ acts in a more masculine way‚ is a feared outsider‚ and shows integrity. This alone would have been considered
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The argument makes indefensible and unjustified assumptions regarding the reduction of audiences of Super-Screen production movies. Taken as a whole‚ these unwarranted assumptions deliver a highly distrusted assertion. Indeed‚ if these unstated assumptions do not hold true‚ the argument entirely collapses. The argument puts its assertions according to an unaddressed report‚ the validity of which is not justified. It is not obvious whether the report truly represents the society. In statistical terms
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