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Biology Essay

The Hygiene Hypothesis
Some of the common allergens, i. substances that cause allergic attacks, include pollen, dust, hay, household chemicals, synthetic material, pet fur, some foods and some food preservatives. When these come into contact with the body of the allergic person, his/ her system activates the white blood cells in response to the foreign negative stimulus. (These cells normally help us to fight disease-causing microorganisms). Once released, the white blood cells cause an inflammatory reaction
Pages: 5 (1250 words), Essay
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The concept of 'personalised medicine' is hard implement. Discuss this statement.
This kind of treatment approach can be referred to as reactive. This is because treatment begins upon establishment of signs and symptoms of a disease.Edgecoe (2004) reveals that the impact of personalised medicine has already been realized across the globe. Quite a number of diseases including breast cancer, HIV/AIDS and cardiovascular diseases are now being managed by the system.Another advantage of personalised medicine is that, a good understanding of environmental and genetic factors
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The use of gene therapy to treat genetic diseases.
Hemophilia is a recessive, X linked disease; therefore, genetic segregation and dominance play an important role in the inheritance of hemophilia. The recessive mutated forms of clotting factor VIII and IX are present on the X chromosome. Therefore, the disease is more common in males because they have a single X chromosome and if it has the mutated gene then the person will have hemophilia as unlike females they do not have another X chromosome for compensation. In females, the dominant X
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To answer one of following questions: 1) Critically evaluate the claim that feeding behaviour is controlled by biological factors. OR 2) Critically evaluate the relationship between Parkinson's disease and impulse control disorders.
(Hakala, 2009, p. 85) If it were damaged, the brain would be incapable to tell the person that he is full because no signal is being transmitted and, thus, he will continue to eat. If an injury affects the lateral hypothalamus, it will result in a sharp downturn in the individual’s motivation to eat and he will not feel the motivated to eat or motivated to eat. 85) This point is explained further in the following section.Feeding is an action that involves an array of variables. First, there
Pages: 6 (1500 words), Essay
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The bio control of buddleia davidii
The adult Cleopus weevil is grey and approximately 4 mm in length. These weevils get said to originate from china too. In New Zealand, the weevils got used as a sustainable weed control method adopted from China. The weevil got chosen as the control agent as it got observed that it only ate the Buddleia leaves.The weevils only get to eat the Buddleia. The weevils lay their eggs on the Buddleia leave bushes. The eggs hatch into small maggots, which defoliate the plant by eating away its leaves
Pages: 4 (1000 words), Essay
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Typhoid fever in children
The invasion of the gut mucosa located in the terminal ileum either through the M-cells that serve as the epithelium of all gut tissue or through the enterocytes. Through the epithelial receptor called cystic fibrosis transmembrane conductance regulator protein, the typhoid Salmonellae adhere to the intestinal mucosa in the terminal ileum. On the other hand, non-typhoidal Salmonella leads to the invasion of the non-phagocytic epithelial cells and eventually the peripheral blood leucocytes and
Pages: 10 (2500 words), Essay
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The risk factors and causes of cervical cancer
The most well known mechanism of protection against cervical cancer is through regular pap tests, which enable one to take precautionary measures once such abnormal cells are noted in a person. Moreover, persons aged below twenty-six years have the capacity to take up a vaccination, which protects one against infection of two main types of HPV (Kraszewski, 2008, p. 14; Thiry et al, 2009, p. Other mechanisms of preventing against cervical cancer is through abstinence or practicing safe sex as
Pages: 9 (2250 words), Essay
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The possible treatment for Arteriovenous malformation
Further, recent research advancements into the role of multidisciplinary efforts and their future prospects will also be discussed.The human cardiovascular system is among the early developed systems, assuming its functional role by the fourth week of embryonic life. It consists of heart and a closed network of tubular vessels, and serves as a transport system for circulation of blood in the body (1). The pumping mechanism of heart forces the blood into arteries, then arterioles, followed by
Pages: 20 (5000 words), Essay
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This house believes that the total knee replacement design should be improved.'for the motion'
The progress noted is related to techniques, surgical materials, and design of implants in efforts of increasing the effectiveness of knee replacement and in essence contributing to it being amongst the most successful surgery procedure across the globe. Pioneers in the industry include Leslie Gordon Percival Shiers, Leonard Marmor, Frank Gunston, and John Insall. The replacement of knees has been performed for over forty years with immeasurable rates of success recorded coupled with numerous
Pages: 10 (2500 words), Essay
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The negative impacts of invasive alien species
Since human beings are more susceptible to such pathogens, they may end up getting an infection. Plants and other living organisms are no exception. Since the aliens are not part of the natural environment, the already existing living things have little resistance on the type of diseases and infections that they bring along with them. For instance, a disease called "Dutch elm disease" which is from two types of fungi, invaded Europe for about 100 years ago and caused the death of millions of
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The allergy epidemic: causes and potential solutions
Susceptibility to allergies results from inheritance of mutant genes (Holloway, Yang and Holgate 2010, p. More so, twins study revealed that hereditary transmission of allergic diseases such as rhinitis is possible (Snow, Wackym and Ballenger 2009, p. Some of the suggested environmental forces that significantly contribute to increased allergic conditions in childhood include maternal tobacco smoking. Parents’ smoking behavior has been strongly associated with increased prevalence of
Pages: 7 (1750 words), Essay
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Trifolium isthmocarpum
Generally, Trifolium species are recognised as being salt-sensitive. However, research undertaken on a limited number of species (Gibberd et al., 2001) suggests that species do vary in their response and that further research, may be beneficial in identifying species, that are suited to mild or moderate saline. Trifoilum- isthmocarpum Brot (annual clover) is one of these clovers that have not been researched largely. It is grown in moderately saline areas where traditional forage legumes cannot
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The Current Evidence of Human Evolution
After the formation of species homo sapiens man had already undergo minor evolutionary change under the influence of natural selection in different climatic conditions. Depending on the environmental conditions at the local human populations stable differences emerged and races were stood. If population would save a primitive lifestyle then racial differences would gradually escalating, given sufficient mobility of human populations, and people probably would have existed for some time as a
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The Current Evidence of Human Evolution
The assumption that human technology has been able to create provisions to humans, hence, reducing the biological pressures that could trigger genetic alterations has been disqualified by recent research. In fact, it is reported that the genetic signals are very vivid and can be detected in few births. In Quebec, a town in Canada, for instance, recent human evolution has been detected. Researchers (scientists in this quest) say that micro-changes in the overall gene structure in humans can be
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The role of immune therapy in breast cancer
Innate immune system is such where cells and proteins are ready to fight the microbes always and hence protect the body at the site where the infection takes place. The major constituents of this system include physical epithelial barriers, phagocytic leucocytes, dendritic cells, natural killer cell which is a special type of lymphocyte, and circulating plasma proteins (Mooi 2010; The innate and adaptive immune systems n.The adaptive system is different from the innate immune system in the
Pages: 8 (2000 words), Essay
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There are 10 questions that needs to be answered with about half a page short essays.
Vascular resistance, the opposition of blood flow due to friction between the blood and the tunica interna of the walls of the blood vessels, is controlled by three main factors namely; lumen diameter, blood viscosity and blood vessel length. The smaller the lumen diameter, the greater the resistance to blood flow (vasodilation widens the lumen while vasoconstriction narrows it). Resistance to blood flow increases with blood viscosity. Blood viscosity is itself dependent (directly proportional)
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Topic Collection 1
Those that result from natural conditioning have humans no powers to control them while those resulting from human activity can have control from the humans. A number of facts reflect these views and their influence on the way of life.FACT 1: Amino acids band together from compounds in the earth’s primitive atmosphere. Considering the worldview that regards the natural formations as a way of life, the formation of Amino Acids is a natural process that involves natural forces of formation. The
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TISSUE ENGINEERING AND ARTIFICIAL ORGANS
The development of an efficient scaffold is a complex process that involves different mechanisms that range from Fused Deposition Modeling that appreciates rapid prototyping. The process is vital since it provides a structure that offers biomechanical conditions necessary for cell growth attached to proliferation for proper development of body parts. Besides this method, the application of conventional techniques also provides the body with the necessary porous scaffolds that function the same
Pages: 7 (1750 words), Essay
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The use of Beta-blockers and ACE inhibitors or Endothelin receptor antagonist and ACE inhibitors as combination therapy for heart failure
Primary prevention includes the adoption of a healthy diet and the participation in physical activities. Pharmacological management, mostly through beta blockers and ace inhibitors have been recommended for heart failure.Heart failure, otherwise known as congestive heart failure is one of the possible outcomes of cardiovascular diseases. In instances when it is not immediately managed and resolved, it can be potentially fatal. Due to the fatal nature of the disease, health authorities have
Pages: 24 (6000 words), Essay
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Therapeutic management of irritabe bowel syndrome in PRIMARY CARE
Hand, there was not clear evidence of benefits for antidepressants and bulking agents which were studied together with the antimuscarinic antispasmodic (Quartero et al.Kumar et al (1987) conducted a study on the optimum and effective dosage of Ispaghula Husk in patients with IBS and the relationship between symptom relief and whole gut passage time and stool mass. In the first part of the study, 14 male patients took increasing dosages of 10 g, 20 g, and 30 g daily for 17 days. The symptoms of
Pages: 5 (1250 words), Essay
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