Frederick Griffith Essay Example for Free

Frederick Griffith Essay Biography Frederick Griffith (1879-1941), who was born in Hale, Cheshire County, England and who attended the Liverpool University, was a British bacteriologist whose focus was the epidemiology and pathology of bacterial Pneumonia. In January, 1928 he reported what is now known as Griffiths Experiment, the first widely accepted demonstration of bacterial transformation, where a bacterium distinctly changes its form and function. Griffith succumbed to his death around the year 1941 due to the air raid. His Purpose and what he derived? Griffith showed that Streptococcus pneumonia, could transform from one strain into a different strain. The observation was attributed to an unidentified transforming principle of transforming Factor. This was later identified as the stuff of life â€Å"DNA† The Experiment Griffith’s experiment, reported in 1928, was one of the first experiments suggesting that bacteria are capable of transferring genetic information through a process known as transformation. Griffith went about deriving his results by means of using two strains of Pneumoccocus (Streptococcus pneumonia) bacteria which he used to infect several mice. A type smooth strain and a type rough strain. The smooth strain has its components covered by a polysaccharide capsule, which gives it the ability to live in adverse conditions and divide rapidly through a process called Binary fission. Adverse conditions in the context of this experiment would mean â€Å"protection from white blood cells† The third line of defense’s inability to phagocytize the bacteria subsequently results in the death of the mice because the capsule accommodates for the rapid growth of the same cell. Bacterial cells usually have a target organ to which it chooses to disintegrate, and in the case of abundance, the more the number of bacterial cells the more likely the host is going to succumb to it death. How the Experiment was Set up? The experiment was set up by means of inoculating mice with different forms of the same bacteria but with varying strains. The first mouse was inoculated with the rough strain of the streptococcus bacteria and the mice lived. The second mouse was inoculated with the smooth strain (virulent strain) and the end result was the death of the mouse. The third mouse was inoculated with the heat killed smooth strain bacteria and the mouse lived. The emphasis to the transformation principle was given when Griffith infused the rough strain and the heat killed smooth strain and inoculated the mouse which further resulted in the death of the mouse. Griffith was unknown of the reason why the mouse died, but with scientific reasoning, he brought up the idea that the combined Pneumonia bacteria used a transforming principle to activate the virulence, which subsequently then was named the transformation principle. Why did the Heat killed smooth Bacteria show no effect towards the Mice? Just like how we humans function well on optimal temperature, bacteria too have a set temperature to work at its potential. In the context of this experiment the virulent smooth strain pneumonia bacteria was covered by a capsule which consisted of a polysaccharide, a sugar. The introduction of heat disintegrated the capsule, subsequently making it prone to phagocytosis by the white blood cells. The rough strain didn’t comprise of a capsule which explains why it showed no effect towards killing the mouse. The introduction of heat denatured the components of the smooth train which as a result didn’t give the heat killed smooth strain bacteria, not enough potential to kill the mouse. Visual Aid Contribution to our Knowledge Shedding Light to the Transforming Principle Upon research and experimentation on Pneumococcal Streptococcal bacteria-Griffin pointed out that the information in bacterial cells could somehow be transferred between different strains of bacteria. This was long before the discovery of DNA and was an inspired piece used by Avery, Mc Carty and Mc leod to emphasize more on what are primarily the subunits of life. Griffith also wrote a paper in 1928 with regards to his experiment and how he came up with the derivation of the term â€Å"Transforming principle†. Apart from Griffins inspiring research, his findings led to the pivotal beginning of molecular biology. In 1952, other researches with the insight gained from Griffiths experiment, further brought meaning to what is the fundamental and the subunits of life by creating their own sets of experiments all interconnected with this experiment in the process of deriving the form, structure and the function of DNA in one way or another.

Ideas, Themes, Symbols, and Symbolism in Siddhartha :: Hesse Siddhartha Essays

Siddhartha: Ideas, Themes, and Symbols This novel had the constant presence of the philosophy of Buddha. From the beginning to the end, Siddhartha was in search of Nirvana. He repetitively showed dissatisfaction to each of his new lifestyles and had to move on in his search. This philosophy was emphasized greatly at the climax, when Siddhartha attempted suicide but heard the all-knowing "Om" from within himself. By the end, both he and his friend, Govinda, had reached enlightenment. All of the characters lived in their own satisfying world. Everyone had reached his own destiny, everyone had reached his own Nirvana.       The novel had a faint cyclic theme to it. The main character led an ascetic, pure lifestyle. He then turned to a materialistic world, and finally returned to the ascetic life. He had lived with the Samanas, a group of ascetics who lived in the forest. He moved on to the town of Samsara where he fell in love with a beautiful woman, became a rich merchant, and lived life in luxury. In his return to the ascetic life, Siddhartha became a ferryman and lived by the river until the end of this book. He was happiest there, learning from this great river. This theme was also evident when his young son left him to pursue other interests. It reminded Siddhartha of when he had left his own father. Though this theme was never explicitly mentioned by the author, the intent may have been to have such truths embedded in the reader's subconscious.       The most important theme was the self-discovery of the protagonist. The reader is brought into the life of this young man and is shown all of the high and low points. From the very beginning of this novel, Siddhartha was in search for the truth. What he had in store for himself was many years of discontent, but finally he found what he was looking for. It was at the river where Siddhartha found the meaning of life. For many years after his attempted suicide, he remained by the river and learned the secrets of the world.       A major symbol was the magical river that Siddhartha crossed   several times. It represented the boundary between the ascetic world and the materialistic world. He had to cross this river to get from the world of the Samanas (the ascetics) and the town of Samsara (where his lover and merchant mentor was).

Alexander the Great vs Napoleon Bonaparte, What I Got so Far

When we think of Alexander the Great, we think of an outstanding war hero. When we think of Napoleon Bonaparte, we think, again, of an outstanding war hero. If a random person were asked who either of these rulers was, their first response would be a fact about war. Alexander and Napoleon share similarities in their warfare, and how they used it to conquer and establish new lands. Alexander the Great’s strong perseverance and incredible battle strategies led to increase his power over his empire. Napoleon used his intelligence and skill of manipulation to earn respect and support from the French people, which gained him great power.Both men had similar qualities attaining leadership but their strategies to reach this were very different. Alexander the Great was King of Macedon, a state located in Northern Greece. Aristotle tutored him until the age of 16, and by the age of 30 he had created one of the largest empires in the ancient world. As he was undefeated in battle, Alexan der is considered as one of history’s most successful military commanders and his battles and strategies are still taught at military schools worldwide. Alexander III of Macedon, commonly known as Alexander the Great, was born on a bright July day in 356 B.C. and died in June of 323 B. C. During his lifetime he was: King of Macedonia (336-323), Pharaoh of Egypt (332-323), King of Persia (330-323), and the King of Asia (331-323). From reading that alone, it is known that he was a conqueror and successful ruler. Alexander was the son of his predecessor Phillip II who passed away in 336 B. C. leaving the throne, a strong kingdom, and a very experienced army to Alexander. Alexander was awarded to be general of Greece and went on to complete his father’s military expansion plans. With this set up now, King Alexander wasted no time.In 334 B. C. he invaded the Persian-ruled Asia Minor and began a campaign lasting roughly ten years. During this campaign, specifically the battl es of Issus and Gaugamela, Alexander had broken the powers of Persia. Alexander the Great went on to overthrow King Darius III to conquer the entirety of the Persian Empire and now has a kingdom that reigns from the Adriatic Sea to the Indus River. That wasn’t enough for King Alexander; he wanted to reach the â€Å"ends of the world and the Great Outer Sea†. With this, he set off to invade India in 326 B. C. but was orced to turn around at the expense of his troops. Alexander the Great died in Babylon in 323 B. C. ; in years following his death many civil wars broke out and tore apart his empire. Many years later, in a galaxy far far away, on the date of August 15, 1769 another war hero and emperor was born, Napoleon Bonaparte. Napoleon reigned over the French from May 18, 1804 to April 11, 1814 and ruled Italy over the years from March 17, 1805 to April 11, 1814. Napoleon I, Emperor of the French, set up Napoleonic Code; it was a major influence in civil law jurisdict ions.Napoleon is best recognized for his role in the wars against France, known as the Napoleonic Wars. His success in these multiple battles led Napoleon to be known as one of the best military leaders of all time. His strategies and campaigns are studied at military schools around the world. Napoleon Bonaparte was born into a family of noble Italian ancestry. Napoleon settled in Corsica in the 16th century and later was trained as an artillery officer at a prestigious military school in France, where they most likely talked of Alexander the Great’s military conquests and strategies.In 1799, Napoleon staged a â€Å"coup d’etat† and made himself first consul. 5 years later the French proclaimed him emperor where he engaged in a series of battles, as said before these were known as the Napoleonic Wars. These wars involved every major power in Europe; after Napoleon’s many victories France maintained a dominant position of authority amongst the continent of Europe. In 1812, the French invasion of Russia and the Peninsula War were turning points in Napoleon’s career. Napoleon’s army was heavily damaged nor ever fully recovered.Just a year later, the 6th Coalition defeated what was left of Napoleon’s army and further invaded France, forced Napoleon to give up the throne, and exiled him to the island Elba. After a year of being exiled, Napoleon escaped from Elba and returned to France where he gained back control. It was only for a short period of time, until he was defeated at the Battle of Waterloo in 1815. He spent the last four years of his life in confinement on another island, Saint Helena, where he died of stomach cancer.

History of Home Schooling and Public School Education

Education systems have existed since ancient times. Historians claim that there was schooling in Egypt 5000 years ago. Generally, education is a way of learning skills and information. During the Medieval Ages religious schools, where children learned religion and some sciences as philosophy, literature, astronomy and mathematics, were more popular. But the wide use of schools is related to the development of society in XIX century. Nowadays, these schools are called public schools and they provide education to all children. After a while, parents and students found some negative sides of traditional schooling system. They searched for alternative education systems to evade problems. In the world practice these two systems diverse in several criteria, such as learning conditions and resources. However, they have common points in benefits of the two education systems. The most notable difference is learning conditions. While being home schooled, students often study individually. They are isolated from the society and have lack of interaction with other students. Some home schooled students participate in social activities and in field trips. In these activities students share similar and common ideas. Also, they learn, research and improve their skills themselves. Moreover, in some cases their tutors are not professional in teaching methods, as it is not an important condition in education system. According to Michael H. Romanowski, Ph. D. of Miami University, only tenShow MoreRelated Home Schooling: Not For Everyone Essay902 Words   |  4 PagesHome Schooling: Not For Everyone Home schooling is when a child is instructed outside of the public school system in a place such as the home. In the year 2002, 850,000 students were home schooled in the United States out of about 50,200,000 that were attending school at that time (Home Schooling Statistics, 1). The numbers of students being home schooled are expected to grow even more in the future (1). Home schooling laws vary from state to state. In New Jersey the home schoolingRead MoreHome School Has Become a Popular Way of Education1018 Words   |  5 PagesSo many reasons why parents choose to home school their children. Even though it has been said that the drop-out rate is higher than in public schools, it has been proven by the NHERI (National Home Education Research Institute) that home schooled children have a higher success rate for college education. NHERI conducts, collects and provides research on homeschooling and publishes the information in the Home School Researcher Journal. H ome schooling has become very popular and some people believeRead MoreThe Pros and Cons of Home Schooling Essay1650 Words   |  7 PagesAdvantages and Disadvantages of Home Schooling When it comes to the education of today’s youth, the idea of home schooling is a highly debated topic. Many people are for home schooling; similarly, many people are against it. The basis of this debate is one of great importance: our children need an education that prepares them for the world. It is the parents right to decide how best to obtain this goal. Advantages unique to home schooling include its convenience, looser attendance policiesRead More Homeschool Essay1593 Words   |  7 PagesHomeschool Home schooling really hit the national radar screen in 1997, when 13-year old Rebecca Sealfon won the National Spelling Bee. Showing everyone that her unorthodox education must be doing something right. Today, though home schooling accounts for only 3 or 4 percent of America’s schoolchildren, the movement’s annual growth rate has become a powerful, hard to ignore indictment of the nation’s school system (Bielick, Chandler, Broughman, 2001). Side by side with public education’s terribleRead MoreThe And The Contemporary Manifestations Of Alternates From Traditional School Structures1419 Words   |  6 Pagesfinal writing assignment is the history of and the contemporary manifestations of alternates to traditional school structures in the United States. I will look at several of these alternatives and how the public reaction to them has changed throughout American history. The reason I am writing about this topic, and the reason this is an important realm o f education to observe and explore, is because of the push for an individualized approach to students’ education and the success that stems from thatRead More Home –Schooled or Not to Be? Essay example1487 Words   |  6 PagesHome –Schooled or Not to Be? Most parents hear the word â€Å"home-school† and conjure up many assumptions that are either false or overlooked at. The technology provided, as well as the teaching quality spent on home-schooled children requires a lot of time and effort from the parents; it is an act of dedication and total commitment. According to the Robinson Curriculum, the parents have â€Å"little personal time or time alone. If care is not taken to set aside time for yourself, it is easy to neverRead MoreThe Effectiveness Of Home Schooling1693 Words   |  7 Pages2015 The Effectiveness of Home Schooling I. Introduction According to the National Home Education Research Institute (NHERI), the number of homeschoolers rose up to 300,000 in 1992 to an estimated 2 million in 2003. Homeschooling has been around since 1960s, created by John Holt, a humanist. He believes that homeschooling is one of the greatest educational movements of our time. Supporters love the idea of students being homeschooled rather than being exposed to public schools because they believe thatRead MoreAt Home with Homeschooling1306 Words   |  6 Pagesmake sure that their children are well cared for. The quality of education that children receive is among one of the greatest concerns for parents. Parents will do just about anything to make sure their children have the best education they can receive, even if this means that they choose a path of home schooling. Although to some home schooling might sound daunting and outdated, but when one faces up with the facts of home education it is clear that, when administered properly, it provides an environmentRead MoreEssay about Home Schooling: A Form of Education on the Rise913 Words   |  4 Pages Being home schooled is a form of education that is on the rise. More and more people turn to their own homes, friends, and families to teach their children. Home schooling is defined by Arizona Families for Home Education as â€Å"†¦parent-led, family-funded, relationship-based education of a child at home.† (AFHE) In short, home schooling is when a parent is the primary teacher for his or her child or children. The purpose of this paper is to explain to the reader why homeschooling is a viable alternativeRead MoreHomeschooling Is More Beneficial For A Student873 Words   |  4 Pageschanged in the twenty-first century, one of them being education. Many aspects are considered when parents choose how they would like to educate their child. Aspects such as academics, sports, learning accommodations, finances, student performance, and social life may all be factors in the final decision. Over the past ten years, homeschooling has become increasingly popular among Americans. According to Brian D. Ray from National Home Education Research Institute, there are over 2.2 million homeschooled