Free Biology Essay Examples and Topics | Page 44

Vomiting Reflex Biology Essay

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In addition, the vomiting centre receives afferent input from the chemotrigger zone, also known as the area postrema. The Chemotrigger Zone (CTZ) is located at the 4th

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Pancreatitis and Peptic Ulcer Biology Essay

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When these enzymes become active in the pancreas itself, they eat through the pancreatic tissue, damaging the organ and its blood vessels. This is called

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Gastrointestinal Disorders I Biology Essay

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This permits stomach acids to penetratet the sensitive lining underneath, resulting in an ulcer. The chief precipitating factor for an ulcer is the presence of the infection-causing bacterium, Helicobacter pylori (H. pylori). H. pylori infection is very common, but does

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The Contribution of Both Social and Ecological Factors Biology Research Paper

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The author of the paper states that phenotypic changes, as a result, influence organisms’ survival and reproduction. However, the relationship between genotype and phenotype changes is a very recent discovery. Many qualitative and quantitative pieces of research are still underway to identify the relationship.

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Prostate-Specific Antigen Test in Canada Biology Case Study

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Prostate-specific antigen is created for ejaculation, where it turns to liquid semen in the seminal coagulum thus allowing sperm to flow freely. It is also thought to be influential in breaking up cervical mucus, permitting the entry of sperm into the womb. Prostate-specific antigen exists in small amounts in the serum of people with fit prostates.

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Assignment 5, Biology Biology Essay

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1. Organelles. One characteristic of eukaryotic cells is that they contain organelles, which each have a specific structure and function. Use your text, the Assignment 5 image file, and Internet or other resources to complete the table below to show details of the main

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Biology Discussion 4 Biology Essay

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Thus, probiotics promote life and are referred as beneficial bacteria. Probiotics are advantageous to the host as they enhance the intestinal microbial balance and inhibit the proliferation of pathogenic and toxin producing microbes. Research is

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Ileal-Lymphoid-Nodular Hyperplasia, Non-Specific Colitis, and Pervasive Developmental Disorder in Children Biology Assignment

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Enterocolitis affects the muscle lining the nerves and the blood. The disease interferes with digestion and absorption due to the development of necrotic patches in the walls of the intestine. In this experiment, 12 children are referred to a pediatrician with cases of normal development at the beginning but later show regression on their development skills such as language.

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Dry Needling in Physical Therapy Biology Essay

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It is being taught in universities at Spain, Canada and Switzerland; but in the United States, it is still controversial as to include it in physical therapy curricula or not. According to him, MTrPs are defined as “hyperirritable spots in skeletal muscle associated with hypersensitive palpable nodules in a taut band” (p.15).

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Analyze the case and answer the questions Biology Case Study

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The patient must show lymphocyte count over 4,000 per microliter. The next form of investigation is doing a bone marrow biopsy which will prove beyond reasonable doubt that this is ALL.

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Information Letter from the Boric Acid Malaria Prevention Foundation Biology Assignment

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It is with great pride that I come to you on behalf of the Boric Acid Malaria Prevention Foundation. We are a relatively young organization that has been in existence for only the past 5 years but, we believe that our trendsetting research in the field of Malaria prevention will qualify us for one of your much sought after Malaria Prevention fund grants.

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Blood Groups and Rh Factor Incompatibility Biology Essay

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When both A & B antigens are found on the surface of blood cells the blood group thus described is AB and the absence of any

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Analysis of the Types of Anemia Biology Essay

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In other cases, aplastic anemia is due to a life-saving medical treatment such as chemotherapy or is the result of an auto-immune disorder. In both of those cases, the cause of the anemia really can't be removed and so the patient continues to suffer the anemia. Thankfully, aplastic anemia is extremely rare.

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Analyze the case and answer the questions Biology Essay

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Tumor staging is important in the determination of treatment method and chances of survival. Tests to determine tumor stage include physical -palpation, information

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Interesting Facts about Panda Bears Biology Essay

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Their life span is not clear but according to Chinese scientists, some pandas in confinement have lived up to 35 years. Pandas are mainly active in the early sunset and at dawn and usually, when are not eating, they are resting. Pandas migrate to lower altitudes with better food accessibility and warmer weather during winter (Ratledge, 7-8).

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General info. about the Dorado fish (known as the dolphinfish and Mahi Mahi) Biology Essay

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Additionally, there are a number of notable scientific classifications for this species. The kingdom is animalia (Bostwick). The phylum is chordate (Bostwick). The class is actinopterygii (Bostwick). The order is perciformes (Bostwick). The family is

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Muscular Dystrophy Is a Genetic Disorder Biology Essay

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Muscular Dystrophy is a genetic disorder, patients suffering from it have wrong or missing information in their genes, which inhibits or stops the production of protein dystrophin which is vital for strong and healthy muscles (Tingle, 1990). The result is that in patients suffering from Muscular Dystrophy, their muscles tend to become weak with time.

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The Significance of Bacteria in the Ecology Biology Research Paper

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The author states that sexual reproduction is advantageous in that it results in variation e.g offsprings of human can have traits from all the four grandparents. Asexual reproduction, on the other hand, is advantageous because it results in the production of great numbers of offsprings hence high survival chances of a given species.

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Monsanto vs. Schmeiser Biology Essay

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As the paper outlines, the company enjoys controversial reputation; and is subject to several environmental and alter-globalization campaigns. Monsanto has been involved in numerous lawsuits related to health damage, dumping toxic waste in the UK, bribing incidents such as Indonesia, incorrect advertising message in France.

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Describing concepts of Microbilogy Biology Essay

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Personal hygiene prevents autoinfection with bacteria. Regular and thorough washing of hands with soap and water, cleaning and disinfection of the clockrooms and bathrooms minimizes risk of feco-oral infections. Garments are

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Genetically Modified Foods Pros and Cons Biology Research Paper

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Other technology by which food gets modified, include selective breeding; animal and plant breeding, and soma - clonal variation. Since genetically

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The benefits of legal human cloning research outweigh the opponents negitives Biology Research Paper

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Cloning of a human provides a solution of various ailments such as infertility. People suffering from infertility can have their own children by implanting cloned embryos into their uteruses. In addition, this method is

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Chronic Forms of Leukemia Biology Essay

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Leukemia is a malignant disorder involving white blood cells in which the bone marrow increases the production of immature white blood cells that are incapable of protecting the body from infections. Leukemia is classified based on cell type and chronicity of the disease and varies according to presentation, clinical signs, and symptoms, treatment, and prognosis.

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Regulation of Biological Protein Activity Biology Essay

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The molecule that is bound by the protein is known as a ligand, which may also be another protein . The transient interaction between proteins and ligands is crucial for the normal functioning of the cells.

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Differences between Acute and Chronic Leukemia in Symptoms, Diagnosis, Treatment, and Prognosis Biology Essay

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Leukemia is categorized into chronic or acute leukemia. These categories have some differences and similarities in terms of their symptoms, diagnosis, treatment, and prognosis. In acute leukemia, abnormalities are caused by immature blood cells that are not able to function appropriately. These cells grow rapidly, which ends up preventing the formation of normal or healthy blood cells.

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Describe the symptoms, diagnosis, treatment and prognosis of chronic leukemia Biology Essay

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Chronic leukemia has varied biology and natural history, and may develop into antagonistic and difficult-to-treat stages. In its first stages of development, persons with this disease may experience few or no symptoms. However, most

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The Use of Sweetners and the Rise in Obesity Biology Essay

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This came with a price to it. There became increased cases of health risks to the consumers of the sugar. This included cases of the consumers suffering from diseases such as diabetes and caries. With a lot of

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Describe the process of graft rejection in transplantation Biology Essay

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The present study focuses on understanding of the process of graft rejection in transplantation. Graft rejection in human bodies may be classified as hyperacute rejection, acute rejection or chronic rejection. Hyperacute rejection that is

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Module 3 SLP - microbial metabolic and environmental growth Biology Essay

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iochemical characteristics, it is not surprising to discover that each species possesses a different set of optimum growth requirements (Brooks et al., 2007; Richard et al., 2007). This paper aims to present the differences in environmental factors that affect the growth of

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Theoretical Probability Sufficiently Predicts Inheritance of Genes Biology Lab Report

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Probability defines an event’s chance of occurrence and may be theoretical or experimental. While theoretical probability relies on naturally expected observations, experimental probability is derived from experimental observations. This report seeks to investigate probabilities in genetics and inheritance. The paper concludes that theoretical probability sufficiently predicts the inheritance of genes.

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How Can a Bacterium Like Helicobacter Be Both Good and Bad for Human Health Biology Research Paper

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Helicobacter is unacceptable in human health in that it infects individuals with a number of infections. These infections are dangerous and affect the normal processes that occur in the stomach. However, this bacterium has more benefits to the human body. As seen in the paper, bacteria can prevent a lot of diseases such as asthma among children.

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Response to Article Questions Biology Article

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Additional claims in the article is the likelihood that cocoa could be effective in relieving migraines in human, just like it has done in research involving mice. Other claims include role of cocoa in deterrence of colon cancer liver damage, and reduction of systemic

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The causes of the current aberrant weather patterns Biology Essay

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Cutting down of trees reduces the capability of planet earth to process the surplus quantity of carbon dioxide in the environment (Spencer, page 28). This excess carbon dioxide in the atmosphere creates imbalance, which results to a change in the standard temperature of the

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Origins of DNA Replication Biology Assignment

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The number of origins of replication called ori differs from prokaryotes and eukaryotes. It is worth mentioning, that prokaryotes, such as E. coli bacteria, have only one single circular chromosome in its cell. DNA replication proceeds rapidly in one direction until all parts of the chromosome are copied.

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Chromatographic Separation of Amino Acids Biology Lab Report

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The author of the paper states that chromatography can be used to distinguish between different biomolecules based on their chemical properties and weight of the molecule. Paper chromatography is mainly used for the separation of molecules and consists of cellulose with hydrophilic characteristics.

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Antifoam Addition to Shake Flask Cultures of Recombinant Pichia Pastoris Increases Yield Biology Essay

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Pichia pastoris, a kind of yeast that finds its industrial use in recombinant protein production, needs to be cultured either in large shake flakes or continuously stored tank bioreactors after the initial selection of suitable clones and preparation of optimum standard for culture conditions. However, there is usually a potential problem with this process.

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G12 Family Proteins Upregulate Matrix Metalloproteinase-2 Biology Assignment

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According to Kin et al. (54), based on the results shown in the a and b figures, Gα12/13-induced MMP-2 upregulation, invasion/migration needs Ras- and Rac. How were the researchers able to arrive at such a conclusion? First, in figure a, it is shown that Gα12/13QL activation is necessary for cells to convert Ras into its activated form, Ras-GTP.

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In Vitro Activities of Synthetic Host Defense Propeptides Biology Research Paper

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Mammalian HDPs also play a number of immunomodulatory functions such as altering host gene expression, inhibiting lipopolysaccharides induced proinflammatory cytokines production a well as promoting faster wound healing. Host defence peptides have been shown to be vital in prevention and clearance of infection.

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Cystic Fibrosis Issues Biology Essay

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The regulator normally expresses a protein that helps chloride ions move in and out of epithelial cells lining the air passages and ducts of the intestines, liver, pancreas, and reproductive system. As the CFTR protein pumps chloride ions out, water follows by osmosis, creating a thin film of water on cell surfaces.

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Animal System Biology Research Paper

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ric animals such as pigs and poultry, the digestive system of ruminants is designed to ferment feedstuffs and avails all the precursors for energy for the animal to use. The digestive system of ruminants like cattle enables the animals to efficiently, use the high roughage

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Role of Zoos in Conservation Biology Essay

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Tropical rainforests have very high humidity and cloud cover. As rainforests are in the intertropical convergence zone, they experience heavy rainfall, with rains being year round or seasonal depending on the forest location.

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How Not Meeting The Assumptions Of The Hardy-Weinberg Principle Aid In Evolution Biology Term Paper

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ly described in 1908 by an English Mathematician, Godfrey Hardy (Hardy 49) and a German physician, Wilhelm Weinberg (Weinberg 1908) who independently formulated certain assumptions, that must prevail if the genetic structure of a population is to remain the same over time and

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Biology- Research Assignment Biology Essay

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Although most cases of tuberculosis infection worldwide manifest primarily as lung disease, one-third of the cases actually affect other organs (Fauci et al, 2008). M. tuberculosis

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Beta Blocker Treatment in Heart Failure Biology Literature review

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Mainly, this entails curbing Systolic Dysfunction complications that have rendered numerous people helpless and increased their mortality prior innovation of Beta Blocker therapy. Beta Blockers comprise

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The Last Mountain Movie (Mountain top removal) Biology Essay

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al is considered as not only the fastest, but also the cheapest way to extract coal profitably, and so, big coal companies are indiscriminately pursuing it in spite of the serious environmental damage and other concerns caused by the process. Firstly, mountain top removal for

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The role of Botanical gardens in climate change Biology Essay

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Primack, 2009). The gardens have continued to provide positive feedback in climate change, education and research due to the wide range of plants from all over the world. In addition, the gardens have provided the opportunity to the

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To Immunize or Not to Immunize Biology Essay

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Some diseases have almost been removed in the United States, due to the use of vaccines. Furthermore, the vaccination against a disease should be continued until the disease has been wiped out, and no person is affected by it. A sudden halt in vaccination can allow the disease to strike back, and become threatening once again.

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Major Issues in Gene Cloning Biology Essay

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After identifying an existing nucleotide sequence that can produce such oligopeptide, the sequences upstream and downstream of it will be used to identify sequences compatible with restriction enzyme digestion. Upon treatment of the purified mouse DNA with restriction enzymes, the isolated DNA sequences will be joined with plasmids.

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Natural Selection Importance Biology Essay

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George Christopher Williams writes, “The contest was decisively won by natural selection, in my opinion, when by 1932 the classic works of Fisher, Haldane, and Wright had been published” (3). Acceptable evidence is not forthcoming in support of other systems of evolutionary change or any other genetic system of adaptations.

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Cigarette Smoking and Fertility Biology Essay

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The article demonstrates that tobacco smoking decreases normal fertility cycles in females and supports reproductive cycles. Both qualitative and quantitative impact is witnessed in the function of the ovary. The occurrence of tubal pregnancy and tubal infertility is enhanced—where tubal pregnancy is impulsive and leads to IVF pregnancies.

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Biology Essays