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Biology Essay

Enzymes - what they do , why they are important
They developed a precipitation technique which was used to crystallize several enzymes (Introduction to Enzymes, 2).Enzymes all come into existence because of proteins. These particular proteins have high molecular weight compounds ranging from 10,000 - 2,000,000 and are composed of amino acids linked by peptide bonds (Introduction to Enzymes, 2).Enzymes cannot be taken for granted in the daily function of the human body. It is the most vital chemical component of our system because our heart,
Pages: 6 (1500 words), Essay
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Ecology environment situation of Kalahari
We experience their quarrels, their problems, their fears and their worries. Their documentation of the wildlife and the various behavior patterns, migration patterns are thorough. They learn much about themselves and how they need to live. They appreciate the Kalahari and how the wildlife co-exist. Through their eyes we see a number of problems that are evident and their zeal to solve these issues and protect the wild and the environment. In the end when they leave we feel like they are
Pages: 8 (2000 words), Essay
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Essay questions in Biology
Meanwhile, the changes in Darwins worldview from 1830 to 1860 mimicked the evolution of his thinking and theory from the time he set out as a naturalist in 1831 to the time of the initial publication of his theory and findings in 1858, when he became convinced of the validity of his theory of natural selection, of the mutability of species and the role that natural selection plays in the way all creatures evolve through time (Hayden; The Economist Newspaper Limited; Walmswell).With regard to my
Pages: 5 (1250 words), Essay
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Effect of Temperature on Peroxidase Activity
Finally the enzyme activity is lost. Hence care must always be taken to maintain the enzyme at specific ph and Temperature.Furthermore, in this laboratory the enzyme that was used to accelerate the hydrolysis of hydrogen peroxide was peroxidase. Peroxidase is an enzyme found in all aerobic cells, which accelerate hydrolysis of toxic hydrogen peroxide. On oxidation it yields oxygen and water, as shown in the following equation:An article was reviewed about enzymes activity and temperature. The
Pages: 8 (2000 words), Essay
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Explain the rationale behind antibody usage in common laboratory assays such as ELISA, immunofluorescence, immunohistochemistry, and Western blotting, and discuss the relative advantages and disadvantages to these (Laboratory assays)
Scientists use mice, rats, and rabbits to clone antibodies. Antibody cloning is the production of antibodies from both living and non-living sources. The first step of monoclonal antibody production in rats involves injecting the rat with an antigen that elicits an immune response by production of antibody-forming cells. These antibody forming cells (B-cells) are isolated from the organism. The B-cells then fuse with tissue cultured tumor cells to form hybridomas (Buchwalow & Bocker 2010). The
Pages: 10 (2500 words), Essay
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Evolution in Health and Disease
However, with the case of a variety of pathogens, the ability to morph, change, and alter the way in which they react to certain substances and environments means that pathogens that had been able to be treated using a variety of different means can eventually become somewhat immune to such efforts and require the medical community to actively engage and seek out new ways in which to stop the spread of disease; oftentimes utilizing entirely different means than the pathogen itself has become
Pages: 7 (1750 words), Essay
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Explain the role of autonomic nervous system. 2) Explain the effects of caffeine or cocaine on the transmission of nerve impulses
Within the autonomic nervous system, the preganglionic fibers release acetylcholine as the major neurotransmitter. Postganglionic fibers release norepinephrine or acetylcholine whose effects can either be stimulatory or inhibitory. The neurotransmitter effects within the autonomic nervous system on target organs are dependent on the neurotransmitter released. Additionally, such effects are dependent on the type of receptors expressed on the effector organs. The divisions of the autonomic
Pages: 4 (1000 words), Essay
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Environmental effects of intensive dairy farming (esp impacts on water) in NZ
Better for me to choose journal articles that have been published in New Zealand compared to those that have been published in other countries as the former are more related to the environmental issue that I want to investigate. Aside from Google Scholar, I will also try out other databases. Moreover, I will select only those journal articles that have a complete or full report, whether in doc, html or pdf format. I will not select those with only an abstract because those will never explain
Pages: 17 (4250 words), Essay
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Entamoeba histolytica
Even though some members of the Entamoeba genus are not associated with disease, they are important since they often may be confused with Entamoeba histolytica in diagnostics. Though it has a rather well distribution of incidence worldwide, there is higher incidence of amebiasis in developing countries. Medically speaking, in order for one to get infected by the protozoa, they ought to have ingested mature cysts that may be present in contaminated food, water or their own hands. Typically,
Pages: 8 (2000 words), Essay
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Eating Disorders
Bulimia thus presents episodes of eating where the victim takes in more food than most individuals under similar circumstances. More, so such eating go hand in hand with lack of self control. (Sandoz et al, 2011, p.Binge-Eating disorder is the third category of eating disorders. It is characterized by binge-eating majorly associated with stress or discomfort. This type of eating disorder, adds (Sandoz et al, 2011, p. 29) occurs with particular frequency and duration distinguishing it from
Pages: 4 (1000 words), Essay
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Effects of steroids on calcium activated potassium channels and secretion of LH and FSH in Atlantic cod (Gadus morhua)
For example, action potentials tend to promote the influx of extracellular calcium ions in voltage-gated calcium ion channels expressing cells. The elevated calcium ions concentration, in the cells activates, calcium activated Potassium channels (CAPC), a pathway that plays a significant role in modulating membrane potentials and thus the electrophysiological effect on hypothalamic releasing hormones (Fettiplace & Fuchs, 1999).CAPCs are present in both neuronal and non-neuronal tissues and have
Pages: 11 (2750 words), Essay
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Ecological effect of ecosystem on sea turtles
It, therefore, means that if turtles become extinct, there will be a decrease in sea beds and other species that depend on the grass beds for food and shelter. Every part of the ecosystem is important, if one is lost, the rest will eventually follow in the same manner (Heileman and Walling 10).Dune systems and beaches do not receive many nutrients within a year. Due to the lack of nutrients, no vegetation is present in beaches and very little grows in the dunes. One reason for the lack of the
Pages: 4 (1000 words), Essay
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Examining Your Communitys Source of Energy
The major sectors that lead in energy consumption in San Diego include transportation accounting to over sixty percent followed by household, commercial and industrial sectors. As stated by United States Power Report (2014), this is a reflection of San Diego’s economy where since most residents within the community work in private automobiles with up to two occupants thus are commuters from home to work. Generally, commercial consume 39%, residential 36% while industrial consume
Pages: 8 (2000 words), Essay
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Effect of the administration of etoricoxib using nanotechnology for the treatment of experimental arthritis in a rabbit model
Consequently, polymers ought to be appropriate for the body such as non-antigenicity, non-toxic as well as also being biocompatible and biodegradable.Nanotechnology also referred to as nanoscience, is an extremely multidisciplinary discipline and also a technology whose intention is to generate, comprehend as well as utilise atomic-and molecular-scale (0.1-100nm) formations, together with fabricating materials or devices that are within the range of nano size. Nanoscience usually applies the
Pages: 10 (2500 words), Essay
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Exam 1
It seeks to understand how the world around us works. Natural sciences are more concerned in generating the truth which outlines a major difference between arts and sciences. Social sciences, on the other hand, concern themselves more on social group, interactions of human being and other things related to the well human being. Social science deals with the truth that has already been generated by Natural Science. For instance, a social experiment can be done to establish how human being
Pages: 4 (1000 words), Essay
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Exam 2
Margulis was encouraged to clearly do research in order to fully gain acceptance on the cell evolution theory. Thus, she based her cell evolution on the past study of Ivan Walliam .As a result, by the end of a decade after his first book on 1970 she came up with analogies that were greatly accepted worldwide. She ended up gaining popularity on the Set theory than the autogency theory that emphasized on the end symbiosis.For instance Margulis in her Set theory she confirmed that few
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Evaluation of embryotoxicity using the zebrafish model
Points of zebrafish’s biology are affirmative for familiarizing this model’s working to through evaluations. The female zebrafish have the capability to lay hundreds of eggs on a weekly basis. The samples are abundant and hence samples for studies are achieved easily. The abundant embryos make toxoid testing of large samples achievable in a shortened period. The vertebrate’s fast evolution in comparison to other warm blooded animals makes it optimal for testing (8). For example, neuronal
Pages: 5 (1250 words), Essay
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Effects of Anti-oxygen (antioxidant) on Smokers
As a result, the free radicals come out as byproducts of the conversion of food to energy. Some foods contain them and to some extent the air that we breath. Other radicals are formed from a reaction of the body due to sunlight’s effect on the eyes and skin.Smokers are at a significant risk of getting various diseases related to tobacco, and it is the toxins. The conditions range from cancer, which affects the lungs and heart diseases, which include coronary heart disease (Agler, 2010). The
Pages: 5 (1250 words), Essay
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Ebola Virus
The disease incapacitates the immune system of the host victim. Persons infected with Ebola virus bear symptoms such as mild nausea, diarrhea, abdominal pains, and bleeding from the eyes. The disease also halts the body from clotting blood resulting in gastrointestinal bleeding. This result to increased wear out of the intestinal mucous membranes and any cuts on the body will ooze blood endlessly (Brooks 32). The persons infected with the virus can take up to six days to ascertain on their
Pages: 4 (1000 words), Essay
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Effect of Ocean acidification upon ability to genetically adapt in Nereis species
Existing in natural CO2 vents, P. dumerilii has exhibited its ability to survive in such extremely low pH levels (Davidson, 2013), as compared to related Nereid species such as Nereis succinea, Nereis diversicolor and Nereis zonata. These pH levels range from 6.3 in the CO2 vents that exist in Ischia (Calosi, et al., 2013) and P. dumerilii is known to thrive in these vents whilst N. zonata co-occurs in the Ischia area but is not known to inhabit the low pH vents (Vodă, 2015). Nevertheless in
Pages: 4 (1000 words), Essay
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