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Essays on hormones in plants
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Auxin is one of the phytohormones. Auxin is basically represented as indol-3-acetic acid (IAA) in plants. It is important in regulating various growths and formation processes (Kefeli & Kalevitch, 2003). Auxin is essential in many vital tasks in plants. Therefore, plants which are unable to produce IAA do not exist. The role of auxin is described by “short distance activity” as a morphogen (Friml, 2003). The term morphogen was probably first being used by the British mathematician Alan Mathison Turing (1912-1954) to understand about the differentiation of Hydra. By dictionary definition, morphogens are chemicals which regulate morphogenesis. However from the perspective of biologists, morphogens are substances which form a concentration gradient, and can actually be viewed as flowing substances. The analyses of IAA levels are too low to provide information on IAA level in individual cells with the current sensitivities of the available methods (Galun, 2010). In adult plants, the source of auxin presumed in the tips of the shoots and in young leaves. Auxin causes apical dominance and ...
Marigolds “Marigolds,” written by the author Eugenia W. Collier, begins with the main character, Elizabeth. The story is told in first person, being told by Elizabeth when she gets older. “Marigolds” takes place in Maryland during the Depression. The reader can tell it is the time of the Depression because in the story it says, “The Depression that gripped the nation was no new thing to us, for the black workers of rural Maryland had always been depressed.” Both the setting and time in this short story are important.
Epogen is produced by the company Amgen. Amgen located atThousand Oaks, California, is a global biotechnology company. It discovers, develops, manufactures, and markets human therapeutics based on advanced cellular and molecular biology. Amgen, founded in 1980, is now the largest biotechnology company in the world. It has 4,200 employers around the world and 2,700 of the 4,200 workers, work at the headquarters in Thousand Oaks. Amgen has centers of research in "Boulder, Colorado and Toronto, Canada; clinical research centers in Cambridge, England and Melbourne, Australia; the international distribution center in Louisville, Kentucky, fill and finish facility in Junco, Puerto Rico; and European regional headquarters in Lucerne, Switzerland. Amgen has other international offices that are located in Austria, Australin, Belgium, Canada, China, France, Germany, Italy, Japan, the Netherlands, Hong Kong, Portugal, Spain, and the United Kingdom." (Amgen 1996)
There were many sacrificial elements that existed in The Bean Trees. Sacrifices that the characters in the novel made for the benefit of others or themselves. These sacrifices played a role almost as significant as some of the characters in the book. Some prime examples of these sacrifices are Mattie’s will to offer sanction to illegal immigrants, the fact that Taylor sacrificed the whole success of her excursion by taking along an unwanted, abused Native-American infant, and Estevan and Esperanza’s decision to leave behind their daughter for the lives of seventeen other teacher union members.
...e involved in the plants carbohydrate metabolism. This response causes the plant’s cell walls to be rearranged and strengthened. THis would increase the plants resistance to infection and the uptake of harmful chemicals.
Albumin is a common protein in humans important for checking the health and detecting diseases. With a molecular weight of 65,000 and a density of 3.5-5.0 g/dL, it is made in the liver and released into the blood [1] [2]. Albumin has varieties of function. It maintains homeostasis to balance the amount of blood in the blood vessels [2] [4]. Albumin has a globular structure therefore it can form a colloid when mixed with water. Albumin is used for transporting drugs, lipids, and hormones by colloid osmotic pressure. Most colloid osmotic pressure comes from albumin [4]. Colloid osmotic pressure help to bind to both endogenous and exogenous substances. Drugs and other substances bind to albumin in the bloodstream so that the drug bound albumin can transport to the liver in order to make the drugs and substances less toxic to the target tissues and the water soluble substances. A lower count of albumin can result in a diseased state [4]. Albumin also can affect platelet system in the body. It can control blood clotting by binding arachidonic acid. This decrease production of thromboxane A2 and the activity of antithrombin increases and terminate clotting [1]. Blood clotting is important because it maintain permeability through vessels. Albumin is also important factor for metabolizing and detoxification drug and substances in our body [4].
What is Oleanna ? Is it a perfect world, or is it a world… The play
Native peoples have made great strides to become equal to other Canadian citizens, but by no means does this mean their plights are no longer important or valid. Too many Native children start drinking at young ages, too many Native girls sell themselves, and too many Native peoples deal with prescription addictions. “In some [native] communities, it’s as high as 75 per cent. Of the thousands who need treatment, she said, less than 10 per cent are getting help.” (Paperny) Oxycotin, the main drug used by the native peoples, has harsh and sometime deadly effects, but due to the dangerous, depressive and aggressive environment that so many reserves deal with, Oxycontin has become the high so many native peoples believe they need. This highly addictive drug though destroys lives further. “On Feb. 6, Matawa First Nations, a tribal council of nine Northern Ontario First Nations, reported that almost 2,000 people have an Opioid addiction in their communities.” (Windspeaker) These 2,000 people need help, and the way in which the government has chosen to deal with this is by cutting Oxycontin from the Ontario health care plan to replace it with OxyNEO. Explaining the history behind this drug addiction and the environment it thrives in, the issues withdrawal will cause and the symptoms of withdrawal, will help people conclude for themselves whether OxyNEO is a positive solution, or we need something else.
The Bean Trees is a novel which shows Taylor’s maturation; it is a bildungsroman story. Taylor is a developing or dynamic character. Her moral qualities and outlook undergo a permanent change. When the novel begins, Taylor is an independent-minded young woman embarking on an adventure to a new world. She has no cares or worries. She is confident in her abilities, and is determined to make it through life on her own. As she discovers new things and meets new people, Taylor is exposed to the realities of the world. She learns about the plight of abandoned children and of illegal immigrants. She learns how to give help and how to depend upon the help of others. As she interacts with others, those people are likewise affected by Taylor. The other developing characters are Lou Ann Ruiz, Turtle, and Esperanza. Together they learn the importance of interdependence and find their confidence.
“Danny’s Plant”, by Meish Goldish, is about how Danny’s mom and his science teacher, Mr. Morgan, played a trick on Danny, so he would be more interested in horticulture. In the beginning of the book, Danny was not interested in horticulture, and his mom thought it was a problem. So, she made a bet with Danny. She would give him his own plant, and if he would have to tell his plant a joke everyday and water everyday. If he could make it grow like crazy, his mom would win, but if it didn’t grow, he would get a new music tape that he wanted. Immediately, Danny confirmed the bet. The article,”Probing Question: Does talking to plants help them grow?”, states that many people believe in talking to their plants, but you need a certain tone or volume
Plant hormones are certain chemicals present in plants that control plant growth and development by affecting the division, differentiation, and elongation of cells. (Campbell, 2008) Each hormone has multiple effects depending on its site of action, its concentrations, and the developing stage of the plant. (Campbell, 2008) Auxin is a plant hormone that is synthesized within the apical meristems and young leaves of a growing plant. Auxin stimulates stem elongation when it is present is low concentrations. It promotes the formations of lateral and adventitious roots, regulates development of fruit, enhances apical dominance, functions in gravitropism and phototropism, promotes vascular differentiation, and retards leaf abscission. Gibberellic acid is one of several plant hormones that govern a plant’s growth. Gibberellins allow for stem elongation in plants. Plants without enough of this hormone tend to grow short or stunted. This chemical is high in the element potassium, which is one the main components of plant fertilizer and very important for plant growth on its own. The...
Marijuana is a plant containing a psychoactive chemical, THC are in its leaves, buds, and flowers. It has been shown that marijuana helps cancer, chemotheraps, AIDS, HIV, glocoma, muscle spasticity, and neurological disorders (www.drugpolicy.org). Medical use of marijuana should be allowed because it is not as addictive as pain medications, it helps with pain and stress, and it helps chronic illnesses.
...fficient chemical messenger that enable nerve cells to communicate with each other in the brain, allowing them to perform their jobs such as thinking, learning and remembering. (Alzheimer’s Association, 2014)
The history of apples stretches back to the days of Adam and Eve, when it is believed to have been the “forbidden fruit” described in the Bible. Despite this long standing history, apples did not always grow naturally in New England. While the first apples are thought to have grown on the lower slopes of Tian Shan, a mountain range separating Kazakhstan and Krygystan, they also grew wild in Central and Southwest Asia, China, Italy, Switzerland, Spain and Greece.
Plant defences are those mechanisms employed by plants in response to herbivory and parasitism. According to Hanley et al. (2007), “the tissues of virtually all terrestrial, freshwater, and marine plants have qualities that to some degree reduce herbivory, including low nitrogen concentration, low moisture content, toxins or digestibility-reducing compounds”. The type of chemical defence may be species specific (Scott 2008). The defences that plants possess may be in the form of chemical production or in the form of physical defences such as thorns or spikes and even through reinforced, rigid leaves. “The compounds that are produced in response to herbivory can either have a direct effect on the attacker itself (e.g. toxins or digestibility reducers), or serve as indirect defenses by attracting the natural enemies of the herbivores” (Bezemer & van Dam 2005). This essay will focus on chemical plant defences and in particular the effects of terpenes, phenolics, nitrogen-based defences as well as allelopathy in plants.
Lavender is a mystery that unfolds in a way not atypical of other mystery stories, but sets itself apart by defying certain characteristics and conventions. There are many details to the plot (mainly to the descriptions of the characters) that are unexpected and deny the reader a chance to confirm their stereotypes about who a detective is, how they should act, and what they should look like. Specifically, in the role of the unconventional protagonist (detective?), Easy Rawlins is so surprisingly human, honestly cowardly, and unromantically realistic that the story seems plausible to the point of disappointment that the characters aren’t actually real.