Chemical Essay Samples and Topic Ideas
chemical modifications of histone proteins, mainly at their unstructured ends (Xing and Hall, 2013; Karp, 2014). In addition, it expresses how the status of chromatin activity is located and how the histone code influences its structure and function. The first postulate suggests that modified waste act as specific protein assembly places, which determine chromatin activity. The second postulate suggests that these waste alters the interaction of histone tails with DNA or with each other (Karp,...
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chemical interactions takes place in the cytoplasm and cell membrane of prokaryotes and in the mitochondria of the eukaryotes. Developing During breathing, oxygen acts as the final electron acceptor at the end of an electron transport chain., reason why aerobic organisms must breathe air containing oxygen to survive. However, anaerobic organisms use anaerobic fermentation or breathing to produce ATP. In this case, an atom other than oxygen is the final electron acceptor. For example, some anaerobic bacteria that live in the depths of the mud in swampy areas use a sulfate ion instead of oxygen. Hydrogen sulfide occurs as a byproduct, instead of water. This explains the smell of sulfur in many...
chemical profile test, total serum protein, test for the CA-125 antigen (also used to detect lung and colon cancer) and other tumor markers ; Image exams such as pelvic and transvaginal ultrasound (where the transvaginal is the most useful), pelvis scanner and abdomen by computerized tomography (CT), by image of magnetic resonance, x -rays or chest ct, gastrointestinal evaluation and biopsy. In the first instance, the clinical and family history provides knowledge to the doctor of the patient's health status, while in the pelvic examination the state of the ovaries and the uterus is physically analyzed, if the doctor detects any anomaly, the ultrasound is usually the first Image exam that is done...
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chemical level. Similarly, another part of the organism is analyzed, the digestive tract. Where its operation and anatomy are analyzed, also covering the pathologies and alterations that can affect the fulfillment of their functions. The kidneys are organs that are pairs, a reddish color and have a bean or Jewish form if we see them in a frontal plane, they are located on the flanks between the posterior wall of the abdomen and between the peritoneum, these are located in theThird and among the last thoracic vertebra, where they are protected by the eleventh and twelfth rib in a partial way, if the ribs come to fracture they can damage the kidney in an important way, even being able to affect the...
chemical bonds resulting in a molecule with a high molecular weight, there are two main methods to obtain plastic, which are, the reaction ofcondensation and addition reaction. The main difference between these two polymerizations is that the condensation reaction creates by -products and on the other hand, the addition does not. Condensation generates by -products due to the fact that a small molecule is lost because the monomer loses atoms when it becomes part of the polymer. The addition reaction is when the monomer is part of the polymer, without any loss of atoms. Polyethylente Reftalate: (PET) Monomers that constitute PET: Dimityl and ethylenglicol terephthalate. It is made up of crude...
chemical substances in quantities without this having important consequences, he believed that the solution to waste and substances was to "dissolve them", that is, pour them into the seas and oceans in order to get rid of themwithout measuring the consequences or risk that species run (both fauna and flora) that inhabit it. Some of the pollutants (either in liquid or solid state) generated more common from anthropic activity that are spilled into the waters are pesticides, herbicides, chemical fertilizers, detergents, hydrocarbons, wastewater, plastics and other solids. To avoid pollution and ensure the sustainable development of this, international agreements such as the Marpol,...
chemical evaluation: It consists of the extraction and centrifugation of a small amount of blood, because in this there are different chemical compounds that help to know how the person's health status is and, in case of diagnosing some condition,Determine the correct treatment. These basic compounds can determine: Glucose Uric acid Cholesterol Urea Triglycerides Creatinine Albumin Prealbumin Clinical evaluation: Here we will talk about the signs and symptoms that the elderly has since he enters the consultation because we may diagnose or have a slight suspicion of what he suffers, we must pay attention to the skin, the eyes, the teeth, the hair, the hair, the hair, the hair,The nails, the...
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chemical and neuroplastic mechanisms, Pathophysiology and anatomopathologist of the ischemic vascular accident Vascular occlusion brings with it a waterfall of chemical events produced by a dynamic interaction between neurons, astrocytes, fibroblasts, smooth and endothelial muscle cells, which in turn interact with the elements of the blood and lead to cell death by hypoxia or ischemia. Hypoxia and cerebral ischemia can be divided according to clinical criteria in focal or multifocal ischemia by vascular occlusion;Global ischemia due to total cardiovascular pumping and decrease in irrigation and diffuse hypoxia dueOf collateral blood vessels, in the transition zones between the tissue with normal...
chemical and electrical changes and also require energy. This nervous impulse that is transmitted from one neuron to another through synapse does not pass directly, since there is a small space between the cells. Experiments have shown that in the axon there are chemical substances known as mediators or neurohumores or neurotransmitters. One of them segregated acetylcholine at the synapse level, causes the excitation of the next neuron that triggers the transmission of nerve impulse. On the other hand, certain neurohumores are synthesized at the level of the cell soma, then they are driven to the axon where they are stored;Subsequently, it exerts its action through the axonic terminal branch where...
chemical factories, toxic landfills or in the vicinity of train tracks and highways. Poverty, therefore, has built a problem of urban catastrophes of unprecedented frequency and scope ”. Regarding this, it really has a very broad observation, the place where I am telling are hills with references to some mountains, which many years ago, were completely empty and were settled invasions that is a very peculiar theme in the city where residue, povertywhich is reflected in many families that are around me not only lack money problems, but problems of crime, drugs or not being made up of the family base that we all know. In addition, many of these people do not entail a paid job according to the...
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