Friday, July 31, 2020
Sample TOEFL Paired Choice Essay What Type of Classes do you Prefer
Sample TOEFL Paired Choice Essay What Type of Classes do you Prefer Sample TOEFL Multiple Choice EssayThe QuestionSome students prefer classes with frequent discussions between the professor and the students with almost no lectures. Other students prefer classes with many lectures and almost no discussions. Which do you prefer? Use specific reasons and examples to support your answer.Special Offer: TOEFL Essay Evaluation and ScoringYou can now sign up to have your practice essays evaluated and scored by the author of this page. This service is a great way to learn how you will do before test day and how you can best prepare for the big day. Sign up today.The Sample EssayEvery student has their own preferred learning style, and therefore it is impossible to accommodate all of them. In my opinion, the best classes are those which include a lot of discussions. I feel this way for two reasons, which I will explore in the following essay.To begin with, classes where we have the opportunity to speak help to develop our intellectual abilities. Classes where the teacher does most of the talking are very passive, on the other hand, and do not help us grow academically. They mostly involve the memorization of facts and details which do not help us in the long run. For example, I recently took a political science class that changed the way I think about the world. The cut and thrust of debate in the class made me consider where my political beliefs came from and if they were even correct. I was required to listen to the opinions of others, so I was a more open-minded person after the class finished. I believe that I would not have developed in such a way by just listening to lectures. This example demonstrates how valuable intellectual conversations can be.Secondly, classes that involve a lot of interactions can help students develop the skills necessary to work well in groups. Many freshman students arrive at university very shy and unable to communicate well. Talking with their peers teaches students how to communicate effectively, and they can use this skill to excel in their future careers. My older brotherâs experience demonstrates that this is true. When he started university he was a very introverted person and did not enjoy collaborating with others. However, after four years of participating in debates, discussions and presentations in his classes he became a very confident public speaker. As a result, when he began his career after graduation, he excelled in group work and was seen by his co-workers and supervisors as a natural leader. He was promoted quickly and advanced through the ranks of his company. Without participating in discussions with his professors and classmates he would not have developed the skills necessary to succeed in this way.In conclusion, I feel strongly that classes which are centered on discussions between professors and students are preferable to those in which the professor does all of the talking. This is because these classes help students develop academically, and because th ey teach students the skills that they need to achieve success in the future. (411 words)Note:This is a sample TOEFL independent essay written by a native speaker. It follows our TOEFL writing templates for independent essays. If it is useful, please remember that we havemany more sample essaysfor you to read!
Friday, May 22, 2020
Social Networking An Important Aspect Of Communication
This paper will show how social networking is an important aspect of communication in the modern world. Social networking is the fastest way to promote any innovation in the business market. A business can gain reputation by staying ahead of their game and use social networks to interact with their consumers, such as Wendyââ¬â¢s on Twitter. Small businesses can use Facebook and Twitter to excel in a short period. The usage of important sources, educational support and plenty of other data can be accessed via social networking. Though there are some negative effects of social networking. One aspect is how effortless the information can be accessed by anyone. Introduction Social networking has been a part of our society for a long time now.â⬠¦show more contentâ⬠¦Itââ¬â¢s not just about that with social networking, there are some advantages that people can benefit from it. Social networking is the fastest way to increase any business and get reputation in the market. Social networking can make a huge difference in the success of a business. When a business launches any new product, they can advertise it across the different types of social platforms. This can show people how to operate it and what benefits can be accessed through that device. There are times where not everyone can be present at the actual conference, however can use Skype to video call. One feature of Skype is being allowed to annotate and real-time collaborate with the other conference members without much hassle (Professional Online n.d.). There is more than one positive effect of the social networking websites. Before hiring someone, the HR can find information about this certain applicant. Social networking websites tell you about everyone. It has information on every person. Social networking websites are helpful in every manner of life. One example, a person having trouble with their car may find answers through a Google search, instead of an inspection at a mechanicââ¬â¢s. It will save a lot of time. Someone can learn a new recipe with a detailed description, or a video demonstrating the procedure. Previously, people had limited options in meeting new people, such as ââ¬Å"through work,Show MoreRelatedPositive And Negative Effects Of Social Networking Addiction1024 Words à |à 5 Pagesoffline. Therefore, one can consider these adolescents as a social network addict, a person who spends a fair amount of time on one or many social platforms. Throughout the three articles, ââ¬Å"Social Networking Addiction: An Overview of Preliminary Findingsâ⬠by Mark Griffiths, ââ¬Å"Social Network Sites: Definition, History, and Scholarshipâ⬠by Nicole B. Ellison and ââ¬Å"Taking Risky Opportunities in Youthful Content Creation: Teenagersââ¬â¢ use of Social Networking Sites for Intimacy, Privacy, and Self-expressionâ⬠byRead MoreHow Social Networking Changed Communication?1504 Words à |à 7 Pages Social Networking I How has social networking changed communication? The topic I selected to research is social networking and how it has changed communication in all aspects of life. I chose this topic because I am interested in learning more information about social media and how it has affected peopleââ¬â¢s communication skills. I am curious to discover how each source of social media affects communication. Everyday people use their cellular devices to either text, call, or videoRead MoreSocial Networking Sites Are Beneficial Or Harmful?1713 Words à |à 7 PagesThere is much controversy on whether or not social networking sites are beneficial or harmful to society. Sites like Facebook, Twitter and Instagram have become an important part in the everyday lives of many adolescents, teenagers and young adults. They have become such an important part of the lives of the younger crowd that older generations refer to them as ââ¬Å"the wired generationâ⬠(Jacobsen, 2011). Many question whether or not this new ââ¬Å"wired generationâ⬠is positive of negative. Different peopleRead MorePositive And Negative Effects Of Social Networking Addiction1020 Words à |à 5 Pagesoffline. Therefore, one can consider these adolescents as a social network addicts, people who spends a fair amount of time on one or many social media. Throughout the three articles, ââ¬Å"Social Networking Addiction: An Overview of Preliminary Findingsâ⬠by Mark Griffiths, ââ¬Å"Social Network Sites: Definition, History, and Scholarshipâ⬠by Nicole B. Ellison and ââ¬Å"Taking Risky Opportunities in Youthful Content Creation: Teenagersââ¬â¢ use of Social Networking Sites for Intimacy, Privacy, and Self-expressionâ⬠by SoniaRead MoreSocial Networking1200 Words à |à 5 PagesSPEECH 2 OUTLINE TOPIC: Social Networking ORGANIZATIONAL PATTERN: Topical SPECIFIC PURPOSE: Informative THESIS STATEMENT: I will be informing the audience about social networking in three aspects. INTRODUCTION ATTENTION GETTER: When you log onto your computer and start up a web browser, what is the first website that comes to mind? Facebook? Myspace? Maybe Twitter? These websites are just some of the worlds top social networking sites in the worldwide webRead MoreSocial Media Techniques1240 Words à |à 5 PagesSocial Media Techniques Abstract The first section of the paper addresses the effects that different types of social networking have on companies. The social media techniques discussed in the following section are social networking, micro-blogging, and photo sharing. The paper also includes an article review section of an article published in Business Report in 2008 regarding theories of leadership. Social media techniques The world of business has become more and more competitive, determiningRead MoreIs Social Networking Essential to Modern Life? Essay1043 Words à |à 5 PagesA key aspect of life is communication; very little would be possible without interactions between people. Breakthroughs in fields such as, medicine and space exploration are a result of thoughts of large groups of people uniting by communication. Beginning from an era of sending letters to ancient phones followed by emails and presently social networking [6]. Online social networking is the use of an Internet website that enables self -identify and connection with other members based on one or moreRead MoreTechnology And Its Impact On The Advancement Of Communication862 Words à |à 4 Pagesinformation or services among individuals, groups, or institution. There are many different areas when it comes to networking, such as, network design, business networks, social networking, home networking and so on. Each individual area ha s its own issue that relates to society today. A major area that is important today is communicating through the network. Back in the day, communication is vastly different than today. Throughout history, it started off orally; just by speaking and hand gestures.Read MoreEssay on Facebook and Social Networking947 Words à |à 4 Pagesinstigating a shift in communication. This change consequently presents that societies are choosing to become part of the popular Facebook culture for various reasons, such as its renowned opportunities for keeping in touch with current social circles, reunifying long lost family and friends and broadening prospects of finding new companions. Facebook removes some of the barriers that may limit our regularity of communication with people, upholding the geographic differences, social class, busy lifestylesRead MoreSocial Media And Its Impact On Society1563 Words à |à 7 PagesSocial media has consumed our society. 47% of American adults used social networking sites in 2011 like Facebook, Myspace, and Twitter; up from 26% in 2008(quoted from procon.org) the aspects of soc ial media both have a positive and negative impact on life. Social networking sites promote interaction with distant family and friends. Social networking sites can demonstrate opportunities to strengthen existing relationships and to develop new friendships as well. The downfall of social media sites
Sunday, May 10, 2020
Abnormal Psychology Essay - 855 Words
Abnormal Psychology Abnormal psychology in the area within psychology that is focused on maladaptive behavior-its causes, consequences, and treatment. Abnormal psychology deals with how it feels to be different, the meanings the get attached to being different, and how society deals with people whom it considers to be different. The spectrum of differences is wide, ranging from reality defying delusions and severe debilitations to worries and behavioral quirks that we would be better off not having but do not significantly interfere with our daily lives. An example of the milder end of the spectrum is a man who was an eminently successful district attorney, was elected governor of New York on three occasions, and was almost electedâ⬠¦show more contentâ⬠¦Joan was a very successful business women working for a major stock broker firm. She was quickly moving up the ladder and had just received a big promotion on what she hoped would be her way to the top. Houghtons normal life was abruptly interr upted one day when she broke down and began to see things and also hear things that did not exist. She had been in and out of mental health care her entire adult life, but now she had reached the breaking point. She began to lose touch with everyone in her life. She stopped showing up for work and eventually was committed to a mental institution by her family. Houghtons break with reality required an intense treatment during a long period of hospitalization. There are many possible explanations for Joans break down. Her life had been fairly normal expect when she was 6 years old her father molested her. Joan told her mother a few weeks later. Knowing that her husband probably did molest her she tried to convince Joan that it was just bad dream. She just could not imagine asking her husband if her had done this horrible act. She was very much afraid of him. So the molesting continued for another three years. These events haunted her entire life, and most likely were the cause of her mental break down. (Houghton, 1982,pp. 548-549) Governor Dewey and Joan Houghton might be described asShow MoreRelated Abnormal Psychology2516 Words à |à 11 PagesThe field of abnormal psychology engages with the obscure line between normal and abnormal behaviour. This blur is as a result of the dissonance that occurs when the two terms are defined for example, when cultural perspectives are taken into consideration-where behaviour (for example sake, experiencing hallucinations) considered deviant in one population is normalcy in another. In attempt to make the field comprehensive a middle ground was determined by drawing on the common elements or patternsRead MoreThe Psychology Of Abnormal Behavior2157 Words à |à 9 PagesThe Psychology of Abnormal Behavior can be describe as has having a behavior that deviates form what is the expected and normal. If abnormal psychology is the study of unusual patterns of behavior, emotion and though, then Hollywood depiction of mental disord er in the movie Helen meets the criterion of the teaching of Dr. Conleyââ¬â¢s Abnormal Psychology class. Goole Play synopsis of the 2008 Sandra Nettelbeckââ¬â¢s Helen. On the outside, Helen( Aheley Judd) has the perfect life a loving family, a beautifulRead MoreAbnormal Psychology967 Words à |à 4 PagesAbnormal Psychology Roshaun Hatchett PSY/410 April 25, 2012 Dr. Christopher Daub Abnormal Psychology Abnormal psychology has been in existence for more than a century. Mental illness was approached from a spiritual point of view. Individuals of certain beliefs would misdiagnose others from the spiritual perspective and would assume that evil spirits controlled his or herââ¬â¢s physical, mental, and observable world (Tyrer, 2010). The following will be covered in this document: theRead MoreAbnormal Psychology1605 Words à |à 7 PagesAbnormal Psychology Psychology is the study of the mind and behavior. It seeks to comprehend people by understanding mental functions and social behavior. It also explores neurobiological and physiological processes that can drive cognitive functions and behaviors. It is this drive to understand mental processes that pushes psychologists to want to learn about what is normal and abnormal behavior. People have tried for thousands of years to understand and define abnormal behavior. In the past 100Read MoreAbnormal Psychology. Classification and Assessment of Abnormal Behavior20707 Words à |à 83 Pages3 CHAPTER Classification and Assessment of Abnormal Behavior CHAPTER OUTLINE HOW ARE ABNORMAL BEHAVIOR PATTERNS METHODS OF ASSESSMENT 80ââ¬â99 CLASSIFIED? 70ââ¬â77 The Clinical Interview The DSM and Models of Abnormal Behavior Computerized Interviews Psychological Tests STANDARDS OF ASSESSMENT 77ââ¬â80 Neuropsychological Assessment Reliability Behavioral Assessment Validity Cognitive Assessment Physiological Measurement SOCIOCULTURAL AND ETHNIC FACTORS IN ASSESSMENT 99ââ¬â100 SUMMING UP 100ââ¬â101 TRead MoreQuestions on Abnormal Psychology4701 Words à |à 19 Pagesand perceptual factors. à C.Medical, sociological, and psychological factors. à D.Cultural, medical, and gender factors. Answer Key:à A Question 2 of 50 1.0 Points Concerning the cause of dissociative disorders, _______ dominate(s) this field of psychology. à A.theory and speculation à B.statistical analysis from experiments à C.observation and patient interviews à D.experimental research with controlled groups Answer Key:à A Question 3 of 50 1.0 Points Jill was the victim of a fender-bender accidentRead MoreThe Psychology Of Abnormal Psychology1580 Words à |à 7 PagesBefore discussing the definition of abnormal psychology, it is first important to identify the real meaning of the word ââ¬Å"Abnormalâ⬠. For laymen to be asked of the definition of the word Abnormal, it is common to encounter answers such as people and behaviors that is weird, strange and odd. These characterizations are not enough to fully describe the true and deeper meaning of the word Abnormal. It is important to consider characteristics in defining abnormal such as whether the behavior is causingRead MorePathological Psychology : Abnormal Behavior948 Words à |à 4 Pages According to the modern perspective of abnormal psychology, abnormal behavior exists when an individual is behaving dangerously and/or showing patterns of behavior that are dysfunctional. Nevertheless, determining insanity among sanity has proven to be much more complicated than it sou nds. An individual whose behavior strays from societal standards is not necessarily abnormally deviant or insane. John Hu simply exhibits behaviors that are different from that of typical European/French social normsRead MorePathological Psychology : Abnormal Psychology1204 Words à |à 5 Pagesdefinition for behavior that is labeled abnormal. It is this way due to the fact that society in its entirety has to agree on normative behavior. Because society will never have the exact same views, opinions, beliefs, or culture, an unmistakable definition will not occur. A simplified definition of this behavior is unusual conduct that goes against what is classified as ordinary in society. The study of this sort of behavior is abnormal psychology. Abnormal psychology focuses on atypical sequences of conductRead MoreSymptoms And Symptoms Of Abnormal Psychology1527 Words à |à 7 PagesAccording to Cherry (2016), abnormal psychology is a branch within psychology that focuses on behaviour th at is unusual and not deemed as normal within society. This branch of psychology is composed of a variety of disorders and their causes as well as possible management and/or treatment. With this in mind and within this assignment, I will discuss the causes of abnormal behaviour, discuss the causes and symptoms of mood disorder as well as discuss the background and importance of Sigmund Freud
Wednesday, May 6, 2020
Satan Rebel or Hero Free Essays
John Miltonââ¬â¢s epic, Paradise Lost, has had numerous, diverse evaluations and translations. Miltonââ¬â¢s objective in composing it was to explicate the storyline of Adam and Eve. Even though the epic is like the biblical story in some regard, Miltonââ¬â¢s character arrangement deviates from that of the Bibleââ¬â¢s story. We will write a custom essay sample on Satan: Rebel or Hero? or any similar topic only for you Order Now All through the epic, Milton illustrates the characters in the manner he imagines they are. In Paradise Lost, Milton depicts Satan as someone with heroic and insubordinate characteristics, but it becomes clear that Satan is not a hero. To demonstrate how major Satan is to Paradise Lost, Milton begins with an introduction of Satan. He utilizes Satanââ¬â¢s valiant traits to his supporters, and his depravity capability to present the fine line between the virtuous and the wicked. Satan, who was called Lucifer, was a highly regarded angel in Heaven. This proves that he was formerly upstanding. The reader views Satan as a powerfully authoritative leader to all in his company. Milton illustrates Satanââ¬â¢s behavior when saying, ââ¬Å"His pride/ had cast him out from Heaven, with all his host. Of rebel angels, by whose aspiring/ To set himself in glory above his peersâ⬠(Milton, 4). Arrogance was the chief cause why God banished Satan from Heaven. Satan constantly attempted to be the person in charge, instead of abiding Godââ¬â¢s rules. He could have made a living in Paradise eternally, but his rebellious feelings were too strong as he declares, ââ¬Å"Better to reign in Hell than serve in Heavenâ⬠(M ilton, 31). This demonstrates how keen he felt about not being below fellow angels. Multiple happenings like the previously mentioned ones are used as persuasion to see Satan as a hero. Satan is seen as the central and smartest angel. Satan is recognized as the second most powerful under God who has the most power. Before Satan chooses to renounce his current lifestyle and defy God, he was one of the most alluring and clever angels in heaven. Even though Satan was attractive, the main feature that makes him heroic is that he was the most commanding angel. This assists him significantly in his uprising against God because the additional angels admire him. An additional ability can be seen in the rebellion, his speech talent. Satan is capable of convincing his fellow angels to accompany him in his revolt. When Satan states, ââ¬Å"to govern, not to serve,â⬠he stresses freedom and persuades others to join him and his rebellion. Satan orates all throughout the story. His speeches are lengthy yet persuasive. Satan convinces one-third of all the angels in Heaven to team up with him. His orations heighten his followersââ¬â¢ interest and confidence in him. â⬠To suffer, as to do/ our strength is equal; nor the law unjust/That so ordains. This was at first resolved, /If we were wise, against so great a foe /Contending, and so doubtful what might fallâ⬠(Milton, 68). In this part of Satanââ¬â¢s talk, Milton presents Satanââ¬â¢s skill by his diction. In addition, this shows why the others admire Satan, as Hamilton says, ââ¬Å"Satan is seen as a prince of Hell, as Well as commoner and matchless chiefâ⬠(Hamilton, 21). After obtaining supporters, Satan is prepared for war against God. Satanââ¬â¢s speech about locating in the Capitol of Hell, Pandemonium, is an a rousing one. ââ¬Å"To have built Heaven high towers/Nor did he scape/ By all his engines but was headlong sent/ With industrious crew to build in Hellâ⬠(Milton, 55). The reader sees how much Satan enjoys the attention when his supporters root for him. This exemplifies the important responsibility that Satanââ¬â¢s arrogance takes part in his judgment. Satanââ¬â¢s arrogance messes with his plot many different times. By doing this, Satan starts to fret about himself and the views of himself in his supportersââ¬â¢ eyes. Satan carries on stating, ââ¬Å"Should we again provoke Our Stronger, some worse way his wrath may find to our destructionâ⬠(Milton, 63). ?This speech appears to be one of Satanââ¬â¢s top moments because his followers are ready to work with Satan, and he enjoys being the leader of his followers. Now that Satan has peeked his power, he begins to decrease his heroic traits. The primary signal is after his speech, ââ¬Å"I should be much for open war, O peers/ As not behind in hate, if what was urged/ Main reason to persuade immediate war/ Did not dissuade me mostâ⬠(Milton, 64). Satan seems to be swamped with thoughts of how he is going to challenge God. Satan is still seen as a hero to his supporters due to how he goes to face God unaided, ââ¬Å"Satan their chief, undertakes alone the voyage, is honored and applaudedâ⬠(Milton, 59). Though, Milton displays this side of Satan to make them think before guessing that Satan is the hero of the story. Even with the ââ¬Å"heroic qualitiesâ⬠Satan has, one does not have to consider him ââ¬Å"heroicâ⬠(Hamilton, 14). This speech foreshadows an oration that puts evidence against Satan being a hero. Satan is not as courageous as he was in the initial part of the story, but he has descended to sneakiness. Milton starts to show these characteristics to recognize the reality of Satan. Along with these details, the reader can notice how Satan is not a hero, but merely a person with a lot of power dependence with multiple heroic traits. Satan can be seen as a hero in the epicââ¬â¢s beginning, but Milton alters the outlook of Satan radically as the epic goes on. Satan is actually a self-centered weakling that let his ââ¬Å"pride lead to ingratitude towards Godâ⬠from the epicââ¬â¢s start (Weber, 25). Even though Satan is a superb speech giver and grand warrior, he appears duplicitous of what he says to his supporters in what he thinks and what he actually performs. Satanââ¬â¢s initial introduction is an instance of this. Satan tells the others fallen angels to not be scared, despite his own fright. All throughout the epic, Satanââ¬â¢s character depreciates. Satan is seen as a grand fighter and then as time passes, his own supporters start to disbelieve him. Milton has his bright hero go forward to be seen and then repelled. This shows how the two most heroic traits that Milton utilizes to portray Satan as an insubordinate hero were diminished, and Miltonââ¬â¢s Satan is not a hero ultimately. Works Cited Hamilton, George Rostrevor. Hero or Fool? A Study of Miltonââ¬â¢s Satan. London: G. Allen and Uwin Ltd. , 1944. Milton, John. Paradise Lost: Books I and II. Boston: Ginn, Heath, Pc Co. , 1883. ? Weber, Burton Jasper. The Constitution of Paradise Lost. Carbondale: Southern Illinois University Press, 1971. How to cite Satan: Rebel or Hero?, Papers
Wednesday, April 29, 2020
NORTH KOREAAAAAAAAAA Essays (227 words) - North Korea, Republics
Caleb Ratliff Williams Mass Communications 21 November 2017 Op-ed How Prepared Is North Korea? The threat of North Korea is something we should be ready for, or that is what we have thought. North Korea is a communist country led by Kim Jong Un where he has total control. He gets to decide the fate and history of each of his citizens. This leads to him believing that he can defeat the United States and the UN with help from some of their neighbors. The last test launch that the United States knows about led to a burnout of the missile and exploded in midair. North Korea's technology is not up to date because of their closed economy North Korea has frequent blackouts, fires, and internet loss. North Korea is dying, and the only thing that keeps it alive is that the citizens are oppressed and closed off from the world. They believe that their leader has made amazing things happen where in real life he has done nothing. This country believes that they can take out a faction that let them live all those years ago. If there was a nuke that came all the way over to the Un ited States, North Korea would not be shown mercy again.
Friday, March 20, 2020
Free Essays on Worldly Challenges
As The World Grows So Do Our Challenges As the world grows so do our challenges. Not only are our problems growing in number but they are also growing in complexity. There is scarcely a day that goes by when I don't hear about some new problem that will soon threaten us all. While some of these problems such as El Nino, earthquakes, and other natural disasters cannot be stopped there are other challenges such as the spread of racial hatred, rising risk of disease spread, and the growing levels of civil unrest throughout much of the world which threaten many lives everyday. Most of the future's challenges will only be made possible if all people, regardless of race, color, or nationality, attempt to work together for a stronger world. There are many ways in which I believe that I can help society meet this future challenge of coming together as a united world. While I was an exchange student, I saw the world from a different point of view. For the first time, I realized that the people of the world have so many similarities in comparison to the few and insignificant differences. To make the people of the world unite would merely take time in convincing people of the world that we are all in pursuit of the same basic goals. All that it would take to show that this could be done is two different cultures to unite and then the rest of the world what can come by the strength all gain by coming together. I believe that I can help in solving some of the barriers that hold us back from completing the task that we all desire which is unity. I served as a miniature version of a diplomat when I was an exchange student. I helped people in another country see that we all have common goals and I also helped sever the bonds to racial hatred by providing them insight into the American way of thinking and they did likewise for me. I have done everything to help sever these ancient bonds and will continue... Free Essays on Worldly Challenges Free Essays on Worldly Challenges As The World Grows So Do Our Challenges As the world grows so do our challenges. Not only are our problems growing in number but they are also growing in complexity. There is scarcely a day that goes by when I don't hear about some new problem that will soon threaten us all. While some of these problems such as El Nino, earthquakes, and other natural disasters cannot be stopped there are other challenges such as the spread of racial hatred, rising risk of disease spread, and the growing levels of civil unrest throughout much of the world which threaten many lives everyday. Most of the future's challenges will only be made possible if all people, regardless of race, color, or nationality, attempt to work together for a stronger world. There are many ways in which I believe that I can help society meet this future challenge of coming together as a united world. While I was an exchange student, I saw the world from a different point of view. For the first time, I realized that the people of the world have so many similarities in comparison to the few and insignificant differences. To make the people of the world unite would merely take time in convincing people of the world that we are all in pursuit of the same basic goals. All that it would take to show that this could be done is two different cultures to unite and then the rest of the world what can come by the strength all gain by coming together. I believe that I can help in solving some of the barriers that hold us back from completing the task that we all desire which is unity. I served as a miniature version of a diplomat when I was an exchange student. I helped people in another country see that we all have common goals and I also helped sever the bonds to racial hatred by providing them insight into the American way of thinking and they did likewise for me. I have done everything to help sever these ancient bonds and will continue...
Wednesday, March 4, 2020
Ribosomes and Protein Assembly
Ribosomes and Protein Assembly There are two major types of cells: prokaryotic and eukaryotic cells. Ribosomes are cell organelles that consist of RNA and proteins. They are responsible for assembling the proteins of the cell. Depending on the protein production level of a particular cell, ribosomes may number in the millions. Key Takeaways: Ribosomes Ribosomes are cell organelles that function in protein synthesis. Ribosomes in plant and animals cells are larger than those found in bacteria.Ribosomes are composed of RNA and proteins that form ribosome subunits: a large ribosome subunit and small subunit. These two subunits are produced in the nucleus and unite in the cytoplasm during protein synthesis.Free ribosomes are found suspended in the cytosol, while bound ribosomes are attached to the endoplasmic reticulum.Mitochondria and chloroplasts are capable of producing their own ribosomes. Distinguishing Characteristics Structure of a Ribosome. Interaction of a ribosome with mRNA. à ttsz/iStock/Getty Images Plus Ribosomes are typically composed of two subunits: a large subunit and a small subunit. Eukarotic ribosomes (80S), such as those in plant cells and animal cells, are larger in size than prokaryotic ribosomes (70S), such as those in bacteria. Ribosomal subunits are synthesized in the nucleolus and cross over the nuclear membrane to the cytoplasm through nuclear pores. Both ribosomal subunits join together when the ribosome attaches to messenger RNA (mRNA) during protein synthesis. Ribosomes along with another RNA molecule, transfer RNA (tRNA), help to translate the protein-coding genes in mRNA into proteins. Ribosomes link amino acids together to form polypeptide chains, which are further modified before becoming functional proteins. Location in the Cell Ribosomes can be found attached to the endoplasmic reticulum or free within the cytoplasm. à ttsz/iStock/Getty Images Plus There are two places where ribosomes commonly exist within a eukaryotic cell: suspended in the cytosol and bound to the endoplasmic reticulum. These ribosomes are called free ribosomes and bound ribosomes respectively. In both cases, the ribosomes usually form aggregates called polysomes or polyribosomes during protein synthesis. Polyribosomes are clusters of ribosomes that attach to a mRNA molecule during protein synthesis. This allows for multiple copies of a protein to be synthesized at once from a single mRNA molecule. Free ribosomes usually make proteins that will function in the cytosol (fluid component of the cytoplasm), while bound ribosomes usually make proteins that are exported from the cell or included in the cells membranes. Interestingly enough, free ribosomes and bound ribosomes are interchangeable and the cell can change their numbers according to metabolic needs. Organelles such as mitochondria and chloroplasts in eukaryotic organisms have their own ribosomes. Ribosomes in these organelles are more like ribosomes found in bacteria with regard to size. The subunits comprising ribosomes in mitochondria and chloroplasts are smaller (30S to 50S) than the subunits of ribosomes found throughout the rest of the cell (40S to 60S). Ribosomes and Protein Assembly Ribosomes interact with mRNA to produce proteins in a process called translation. à ttsz/iStock/Getty Images Plus Protein synthesis occurs by the processes of transcription and translation. In transcription, the genetic code contained within DNA is transcribed into an RNA version of the code known as messenger RNA (mRNA). The mRNA transcript is transported from the nucleus to the cytoplasm where it undergoes translation. In translation, a growing amino acid chain, also called a polypeptide chain, is produced. Ribosomes help to translate mRNA by binding to the molecule and linking amino acids together to produce a polypeptide chain. The polypeptide chain eventually becomes a fully functioning protein. Proteins are very important biological polymers in our cells as they are involved in virtually all cell functions. There are some differences between protein synthesis in eukaryotes and prokaryotes. Since eukaryotic ribosomes are larger than those in prokaryotes, they require more protein components. Other differences include different initiator amino acid sequences to start protein synthesis as well as different elongation and termination factors. Eukaryotic Cell Structures This is a diagram of an animal cell. colematt/iStock/Getty Images Plusà Ribosomes are only one type of cell organelle. The following cell structures can also be found in a typical animal eukaryotic cell: Centrioles - help to organize the assembly of microtubules.ââ¬â¹Chromosomes - house cellular DNA.ââ¬â¹Cilia and Flagella - aid in cellular locomotion.ââ¬â¹Cell Membrane - protects the integrity of the interior of the cell.ââ¬â¹Endoplasmic Reticulum - synthesizes carbohydrates and lipids.ââ¬â¹Golgi Complex - manufactures, stores and ships certain cellular products.ââ¬â¹Lysosomes - digest cellular macromolecules.ââ¬â¹Mitochondria - provide energy for the cell.ââ¬â¹Nucleus - controls cell growth and reproduction.Peroxisomes - detoxify alcohol, form bile acid, and use oxygen to break down fats. Sources Berg, Jeremy M. Eukaryotic Protein Synthesis Differs from Prokaryotic Protein Synthesis Primarily in Translation Initiation. Biochemistry. 5th Edition., U.S. National Library of Medicine, 2002, www.ncbi.nlm.nih.gov/books/NBK22531/#_ncbi_dlg_citbx_NBK22531.Wilson, Daniel N, and Jamie H Doudna Cate. The structure and function of the eukaryotic ribosome. Cold Spring Harbor Perspectives in Biology vol. 4,5 a011536. doi:10.1101/cshperspect.a011536
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