The Discovery Of The Double Helix And Dna - 979 Words

DNA is the central dogma of modern biology, it is present in all living things from bacteria to mammals. DNA carries the genetic information of the organism and is used in processes like mitosis, meiosis and protein production. The reason as to why I chose this topic specifically is because it is central to my favourite aspect of biology, genetics. Prior to the discover of the double helix and DNA itself there was some information and experiments done on genetics with what little knowledge they had. Gregor Mendel carried out his experiments on pea plants by cross breading plants with different traits and came to the conclusion that there are dominant and recessive factors, now called genes. Unknown to Mendel he had just scratched the surface of genetics and this would be taken a step further by Johannes Friedrich Miescher with the discovery of DNA. Johannes Friedrich Miescher used leucocytes from puss on bandages from a nearby hospital. However he came across a problem he had to remove the leucocytes from the bandages without damaging them, he did this by filtering them in sodium sulphate. After obtaining the cells he had to separate the nuclei and the cytoplasm. He did this by putting the nuclei through alkaline extraction and acidification. This caused a precipitate to form which Miescher called nuclein, now known as DNA. James Watson, Francis Crick and Maurice Wilkins are the 3 people awarded for their work on the discovery of the DNA double helix, however there wasShow MoreRelatedThe Discovery Of The Dna Double Helix1913 Words   |  8 PagesThe discovery of the DNA double helix is known to be accredited to James Watson and Francis Crick. Watson describes the events that led up to the discovery in his book The Double Helix. Although they both have put in a significant amount of time and work to find the structure of DNA, one individual who was key to putting their pieces together was Rosalind Franklin. Considering Franklin’s efforts and contributions to the X-ray diffraction images of DNA, which have helped Watson and Crick with theirRead MoreYu Sun Park. Dr. Murphy. Lab Section 4. Discovery Of Dna1394 Words   |  6 Pagessection 4 Discovery of DNA double helix: Related to both Scientific and Humane Aspects DNA, the molecule of life that carries genetic information in humans and almost all other organisms, has been considered as one of the greatest discoveries until now. If DNA could not have been discovered, we would not be able to do or test numerous things such as paternity test and pathological confirmation. There are four main scientists who contributed their lives, knowledge, and ambitions to find out the DNA doubleRead MoreThe Characters In James Watsons The Double Helix1521 Words   |  7 Pages The Double Helix Essay In James Watson’s The Double Helix, there are four main scientists that all work towards the discovery of the double helix. These four people discovered the double helix and forever changed biology. Their names are James D. Watson, Francis Crick, Rosalind Franklin, and Maurice Wilkins. The winners of the Nobel prize in real life were James D. Watson, Francis Crick, and Maurice Wilkins. Rosalind was ineligible to receive the reward because she died prior to the award beingRead Moreresearch studies Essay1521 Words   |  7 Pagesï » ¿ Irahani, Shara-aisa A. BEEd-I EdSci 102-A Feb. 18, 2014 â€Å"Race for the Double-Helix† What were your first impressions of the main characters? James Watson: An American biologist man who has a research about the DNA. For me, James Watson at first was a bit weird guy because of the way he stared and looked at people around him. He is a mysterious guy and a bit naughty to the ladies he has seen. As one of the character said, he is the â€Å"boy-wonderer†. He is alsoRead MoreCharles Crick And James Watson On The Structure Of The Complex Molecule Known As Dna Essay1293 Words   |  6 PagesCrick and James Watson for formulating the structure of the complex molecule known as DNA. These discoveries were a direct result of the accumulation of many scientists’ earlier analyses and findings of the DNA. Before Watson and Crick had developed the double-helical structure of DNA, indication of this genetic material had been revealed around the 1850’s. During the century following the first evidence of DNA, subsequent researchers had been eagerly examining the physical and chemical componentsRead MoreThe Theory Of The Double Helix1321 Words   |  6 PagesAs demonstrated in The Double Helix, a significant process used to make a discovery is working together with other scientists and get more information from them by learning about the results from each lab. Francis and Watson would constantly communicate their ideas and theories with each other for feedback which in return helped them gain more information that could be applied to their models. They will share their ideas with other scientists to help further develop and refine their theories. InRead MoreA Research Study On Dna1322 Words   |  6 Pagesentirely based on DNA (deoxyribonucleic acid), the relatively recently discovered molecule that â€Å"forms the molecular basis for heredity†. In specific, the project to be undertaken focuses on genes, specific sections of DNA, that are responsible for communicating to an organism â€Å"instructions for synthesizing every protein† an organism would require. In the middle of the nineteenth century, a large amount of scientists were involved in the search for the structure of the all-important DNA molecules. TheRead MoreThe Discovery In 1953 Of The Double Helix, The Twisted-Ladder1608 Words   |  7 PagesThe discovery in 1953 of the double helix, the twisted-ladder structure of deoxyribonucleic acid (DNA), by James Watson and Francis Crick marked a milestone in the history of science and gave rise to modern molecular biology, which is largely concerned with understanding how genes control the chemical processes within cells. In short order, their discovery yielded ground-breaking insights into the genetic code and protein synthesis. During the 1970s and 1980s, it helped to produce new and powerfulRead MoreThe Double Helix Dna ( Deoxyribonucleic Acid ) Structure1724 Words   |  7 Pagesgreatest minds of the last century and arguably the biggest step in to creating the double helix DNA (deoxyribonucleic acid) structure. It goes without saying, that the ba sis of human life and why we are the way we are, is due to the DNA that is found on the double Helix. We can see all of our traits from our skin colour all the way to nail thickness, which are a combination of traits from both our parents. The DNA structure also allows us to view where elements come in to play and how our geneticRead MoreThe Contributions Of Rosalind Franklin940 Words   |  4 Pagescontribution as a result of her work with DNA. Prior to this time, DNA was still a mystery in how impactful its purpose could be to society and the growing age of science and technology. DNA became of importance to learn about the foundation in relation to genetic and hereditary. Without the contribution of Franklin, todays understanding of the DNA structure would not exist. Rosalind Franklin died before the Nobel Peace Prize was given for the discovery of DNA. If she been alive, her receipt of the

Posttraumatic Stress Disorder ( Ptsd ) - 1176 Words

Posttraumatic Stress Disorder(commonly known as PTSD) is disorder that occurs after an event which has had a traumatizing effect on an individual. A traumatizing event would include life threatening events, emotionally traumatic events, terrifying events, and even rape. The effects of PTSD are anxiety, violent rages, consistent nightmares, and terrifying flashbacks. Symptoms of PTSD usually emerge after 3 months after the incident, but symptoms can also be evident even years later. Individuals that experience a traumatic event are most likely to develop PTSD. There are five different types of PTSD. These types include: Normal Stress Response, Acute Stress Disorder, Uncomplicated PTSD, Comorbid PTSD, And Complex PTSD. Normal Stress Response(NSR) can occur in adults who have been in a single traumatizing event. Examples can include divorce, loss of job, and loss of a loved one. People with NSR often experience feelings of unreality, numbing of emotions, and stress. Typically, these peo ple tend to push away others. This type of PTSD can be easily overcome by engaging in small groups and having positive conversations. The second type of PTSD is Acute Stress Disorder(ASD). This type of PTSD usually occurs within a month of a severe traumatic stressor. For example, it could be a death of a loved one, a threat of some kind to the individual, whether it be to oneself or another. The symptoms of this type can range from feeling numb to insomnia and even having flashbacks.Show MoreRelatedPosttraumatic Stress Disorder ( Ptsd )994 Words   |  4 PagesPosttraumatic stress disorder, also known as PTSD, is a psychological problem that according to Nebraska Department of Veterans’ Affairs, in 2007, 7.8 percent of Americans will experience at some point in their lives. Posttraumatic stress disorder has a range of symptoms that affects the life of the person who suffers from the disorder and close friends and family. However, there is hope for the person suffering from PTSD and six different theoretical models to choose from. Posttraumatic stressRead MorePosttraumatic Stress Disorder ( Ptsd )2353 Words   |  10 PagesIndividuals that show to have Posttraumatic Stress Disorder (PTSD) are significantly affected both mentally and emotionally due to the exposure to a traumatic event. PTSD is a life-long disorder that is being seen diagnosed more and more among returning soldiers and sexually-violated individuals. Because of its increased detection, the importance of constructing effective treatments for individuals living with PTSD is becoming increasingly recognized. Although effectively treating PTSD has shown to be ratherRead MorePtsd And Posttraumatic Stress Disorder1216 Words   |  5 PagesPTSD or Posttraumatic Stress Disorder is a growing concern with our returning soldiers. As technology is advancing, battles are becoming more and more gruesome. The scars from defending your country are not only physical. Some scars may not be visible, but are even more dangerous. The trauma imbedded in these men and women’s heads will cause pain for them and their entire family. The dictionary definition of PTSD is a serious condition that can develop after a person has experienced or witnessedRead MorePosttraumatic Stress Disorder ( Ptsd )1260 Words   |  6 PagesPosttraumatic Stress Disorder In today society, many people go through many tragic events in a life time. One of the most common disorders is posttraumatic stress disorder. This disorder is can be exposed to violent events such as rape, child abuse, war, domestic violence. This disorder thought to be only on war veterans who have been involved in combat. But this disorder is not only limited to soldiers but to any person. Anybody can go through posttraumatic stress disorder who has had horribleRead MorePosttraumatic Stress Disorder ( Ptsd )3006 Words   |  13 PagesPosttraumatic stress disorder (PTSD) is a debilitating psychiatric disorder that may occur in some people following a traumatic event. PTSD and depression often coexist due to the similar characteristics of PTSD and depression as well as the nature of a traumatic event inducing PTSD as well as depressive symptoms per DSM-5 guidelines. PTSD has been noted to coexist with diabetes as well in several research studies. The etiology, prevalence, and symp toms of PTSD, depression and PTSD associated withRead MorePosttraumatic Stress Disorder ( Ptsd )2078 Words   |  9 Pagesadults who experience traumatic events this year will go on to develop Posttraumatic Stress Disorder. It is estimated that 31 million United States citizens are suffering from the disorder at any given moment. Posttraumatic Stress Disorder is one of the world’s most prominent psychological issues, despite the fact that several people are not even familiar with its name. Posttraumatic Stress Disorder (PTSD) is an anxiety disorder that may occur after experiencing traumatizing events or being involvedRead MorePosttraumatic Stress Disorder ( Ptsd )1514 Words   |  7 PagesDescription Posttraumatic Stress Disorder (PTSD) is defined as â€Å"a condition that generates waves of anxiety, anger, aggression, depression and suspicion; threatens a person’s sense of self; and interferes with daily life functioning† (Smeltzer, Bare, Hinkle Cheever, 2010, p. 99). As human beings, we are built with different type of emotions and feelings that can endanger us or benefit us. When faced with a traumatic life event, an individual will either overcome the event and become strongerRead MorePosttraumatic Stress Disorder ( Ptsd )1402 Words   |  6 Pages Posttraumatic Growth in Relation to Resilience Trauma is common but not all survivors experience posttraumatic stress disorder(PTSD). In the National Comorbidity Survey, trauma exposure rates exceeded 50%, yet lifetime PTSD was estimated at 7.8% (Kessler, Sonnega, Bromet, Hughes, Nelson,1995). These ï ¬ ndings have been replicated and found to be consistent suggesting that most people exposed to trauma can retain a stable equilibrium without reactive psychopathology (Bonanno, 2004; Bonanno,GaleaRead MorePosttraumatic Stress Disorder ( Ptsd ) Essay2002 Words   |  9 PagesPosttraumatic stress disorder (PTSD) is a prevalent trauma and stress related disorder (Narrow, et al 2002). In Australia, 7.2% of population who belong to the 16-85 years old group have suffered from PTSD (McEvoy, et al 2011). A statistic also revealed that 4.6% of males and 8.3% of females have been suffering PTSD for over 12 months (Australia Bureau of Statistics 2007), hence, it is obvious that PTSD is a serious mental disorder. This essay is going to e xplore the diagnostic criteria of PTSD,Read MorePosttraumatic Stress Disorder ( Ptsd )1275 Words   |  6 PagesPosttraumatic stress disorder (PTSD) can be defined as â€Å" a complex disorder in which a person’s memory, emotional responses, intellectual process, and nervous system have been disrupted by one or more traumatic experiences†(Swan Persis, 2016). It is trauma and stressor related, a disorder that depends on a factor outside a person. Types of events that can lead to the development of PTSD include physical assault, rape and sexual assault, military combat, torture, mass violence, natural disasters

Ozymandius Free Essays

Commanding poems that continue to be talked about and analyzed to this day. Each sonnet was published by Leigh Hunt early in 1818 in consecutive issues of his monthly Journal, The Examiner (Rumens, 2010). Even though the sonnet written by Smith has taken a back seat to Shelley in scholarly study, both poems explore the opulence of ancient history and the inevitable consequences of time. We will write a custom essay sample on Ozymandius or any similar topic only for you Order Now Inspired by recent discoveries in the Near East, Shelley and Smith were motivated by the words of historian Odorous Sculls who claimed the inscription on the statue of Renames II read, â€Å"King of Kings Commanding am l. If any want to know how great I am and where I lie, let him outdo me in my work† (Mimics, 2010). The motivation for these separatist poems was to create a piece of artwork that would withstand the inevitable passing of time. Unlike the crumbling boasting monuments of Ancient Egypt whose intent was to memorial their rule, their own literary words would be a piece of poetic art that would forever be remembered in European literature. While the differences outweigh the similarities between these woo poems, there is a uniting theme expressed by both Shelley and Smith. Each author uses the same subject, tells the same story and makes the same moral point of the arrogance of human authority and the inevitable decline of all leaders. Every great leader wants to be amortized and remembered. Time is the ceaseless enemy of this great wish of mortal men. It never stops, takes pause or shows tire as it breaks down the most triumphant of mortal monuments. Both poems use the expression of time to unite the idea that all power is fleeting as exampled by the only mains of the statue’s leg. The variations in diction between Shelley and Smith allows for a vast difference of perspective. Smith, an author of historical novels and financial advisor to Shelley, lacked an overall flare that is seen in Shelley poem. However, his words reinforce the sense of loss and emptiness of the desert and that forgotten Babylon’ (Smith, 1818). Smith chooses a future perspective of someone stopping upon the ruins and wondering what greatness once resided in the Egyptian desert. His words are less imaginative and the tone of the poem comes across more loom than wrathful as compared to Shelley. There is no focus on the arrogance and harsh rule of Commanding. On the other hand, Shelley chooses to present the remains of Commanding from the narrator’s perspective. The passage, â€Å"Tell that its sculptor well those passions read†, shows that the unrelenting style of rule, as depicted on the visage, was accurately portrayed to the traveler (Shelley, 1818). Shelley is able to strip focus away from Commanding’ own aspiration of being amortized and draw attention to the truth of his unsympathetic reign as depicted wrought the hands of the artisan. Shelley literary style and viewpoint makes clear his disdain for ancient rule and monarchies (Solo Interactive Learning). Shelley and Smith were both inspired by the political developments of their own day and opinions were heightened by the 1821 acquisition of a statue of Rammers II by the British Museum in London. In their own personal style, each poet conveyed the same paradox: â€Å"Commanding, the self-proclaimed King of Kings, commissioned a statue of himself to guarantee his immortality, but all that’s left is a broken statue† (Durbin, 012). How to cite Ozymandius, Papers