Genetic Engineering in Food Production Essay Example for Free

Genetic Engineering in Food Production Essay Genetic Engineering in Food Production: Is it Safe, Wise, and Moral? Over the past couple of decades, the genetic engineering has been found and is regarded as the improvement of advanced technology in the field of biology. Ever since the first gene was cloned in 1973, genetic engineers have been pursuing at break-neck speed the unlimited possibilities promised by biotechnology . Their excitement, which has generated billions of investment dollars for the industry, is understandable. Bioengineering allows scientists to identify specific gene sequences responsible for particular characteristics and then to transfer the genes and the specific trait into entirely different species. One of the more current and controversial issue in the field of biotechnology is the use of bioengineering in food production. Scientists are experimenting with many different plants, but the genetic engineering of the tomato, dubbed Flavr Savr has been the most highly publicized project by far. The new tomato is supposed to boast more red and be tastier due to its longer staying time on the vine, thereby giving it more time to accumulate sweetness; yet, it will not rot or spoil because of its new genetic makeup. (Davidson 1993). With this advanced technology scientists argue that it could offer the greatest hope in the aid to stop hunger in Third World countries. This new technology could be used to make bulk levels of food production more efficient and less costly. However, despite all of its advantages in creating better crops, many people are very skeptical about its safe and possible long-term health effects. Moreover, the social issue lies deep in the realm of ethical and moral concerns. Do people really want to eat meat that is leaner and tastier but contains genes from humans? Or, would individuals (like vegetarians) be able to eat certain vegetables that may contain genes from animals? Personally, I would not support the use of genetic engineering in food production based on moral and ethical reasons: I do not think that scientists should be able to use their knowledge and social prestige in society to be able to play the role of God in creating new or better living things even if their justification is for the purpose of serving mankind. Although we still have much to learn about genes, recently developed techniques have already given rise to a new technology of molecular genetics. Genetic engineering, also known as gene splicing/manipulation and recombinant DNA technology is a set of techniques for reconstructing, or deliberately manipulating, the genetic material of an organism. Operating at the molecular level, this process involves the addition, deletion, or reorganization of pieces of an organisms DNA (known as genes) in order to alter that organisms protein production (Arms et al. 1994). The use and applications of genetic engineering range from medical and pharmaceutical to industrial crops and food products. Its applications, today or in the future, include†¦creating improved strains of crops and farm animals (Arms et al. 1994). All of these applications rely on the ability to transplant genes into a cells makeup, or genome. The new gene may come from another organism, of the same species, or it may contain DNA produced in the laboratory. One example, the new Flavr Savr tomato, developed by Calgene, a biotechnology company based in Davis, California, was subjected to years of scrutiny before the FDA (Food and Drug Administration) agreed that it was safe to eat. They found, copied, and rebuilt a gene that lets these tomatoes stay on the vine without softening and spoiling. That means that the fruit can develop more of the sugars and acids that make a home-grown tomato taste so sweet and rich. Conventional tomatoes sold in the stores are often hard and flavorless because they are picked while green and firm enough to transport, then ripened by spraying with ethylene (Wood 1995). This turns the tomato red but does nothing to develop a riper flavor. Ethylene, a colorless, odorless gas that once kicks in, so do all the problems of perishability (Wood 1995). Since tomatoes have a softening gene, it produces RNA (Ribonucleic Acid) to help manufacture a protein that causes rotting. To stop the tomatoes going soft too soon, the researchers devised a way to block production of the enzyme polygalacturonase, which breaks down cell walls and eventually causes the fruit to rot (Miller 1994). The Calgene scientists inserted a mirror image of the softening gene that produces a reverse copy of the RNA. This reverse RNA blocks the action of the regular RNA and helps to preserve the fruit. All in all, Calgene seems to have produced a good but hardly outstanding tomato using antisense technology, given all the propaganda and advertisements. A couple of the reasons for why the tomato failed were because: (a) the manipulation of the ripening gene had unintended consequences (soft skin, weird taste, compositional changes); and (b) the high price they tried selling it at first for$2. 99 a pound (as expensive as organic tomatoes), then later dropped the price to $2. 49, then $1. 99, then . 99. Furthermore, the general public does not seem persuaded or have caught up with this trend yet. For one, people are greatly concerned about the safety of the product since the FDA does not insist that genetically engineered foods carry a special label, even though the FDA assured consumers that they can be confident in knowing that foods produced by genetic engineering are as safe as food in our grocery stores today, stated FDA Commissioner David A. Kessler, MD (Miller 1994). However, critics have cited a case in which at least 31 people died and 1500 contracted a fatal blood disease after ingesting a genetically engineered batch of L-trytophan, a dietary supplement (Davidson 1993). Without proper labeling it will be impossible for consumers to exercise their right to choose what kind of foods they eat. Another issue among consumers and environmental activist groups is that of moral and ethical concerns. Many people feel that scientists might have gone too far in terms of experimentation. We have now come to the end of the familiar pathway of leaving everything to the creation of Mother Nature. With the rise of advanced technology in genetics, scientists now possess the ability to manipulate genes, and redirect the course of evolution. They can reassemble old genes and devise new ones. They can plan, and with computer simulation, anticipate the future forms and paths of life. Hence, the old ways of evolution will be dwarfed by the role of purposeful human intelligence. However, just as nature stumbled upon life billions of years ago and began the process of evolution, so too would the new creators of life find that living organisms all have a destiny of their own. To evaluate the validity of the benefits of this technology, we need to answer three simple questions: Is it safe, is it wise, is it moral? Sinsheimer 1987). To answer the first question about whether it is safe, if the technological developments are kept open to public knowledge and scrutiny, I think in the short term it could be. This way the general public can monitor the hazards of any new product introduced into the biosphere, and can probably cope with any immediate problems or consequences. In answering the second question of whether it is wise, I would say that it is not. Through decades of research, scientists have learned of the different pathogens that prey on humans, animals, and major crops. But I believe that their knowledge is still very limited in trying to understand what led to these organisms existence and modes of adaptation. Thus scientists cannot really predict whether all their new discoveries and creations might somehow lead to a new and unexpected group of harmful species since potential organisms that could be converted by one or more mutations be transformed from harmless bugs to serious risks. Finally, to answer the question of the advantages of genetic engineering in terms of morality and ethics, I can only say that the more we create, the more problems we will have in the long run in trying to solve them. Life has evolved on this planet into a delicately balanced and fragile network of selfsustaining interactions and equilibrium. If we try to change or replace the creatures and vegetation of this earth with human-designed forms to conform to human will, I believe we will forget our origins and inadvertently collapse the ecological system in which we were found. Moreover, do we really want to assume the full responsibility for the structure and make-up of our world? I think that we seriously need to intervene between the scientists and engineers to consider a solution that will help slow down all of these experiments so that we could step back and look at what we are doing. If not, I think that these practicing scientists and researchers should be more broadly educated in our humanistic values and traditions. They need to understand the implications of what they are doing in order to be able to balance the concerns of the natural environment and that of societys humanistic needs; to bear in mind that technology exists only to serve and not create. Human beings, are of course, sprung from the same DNA and built of the same molecules as all other livings things. But if we begin to regard ourselves as just another group of subjects to test our experiments on by altering or tampering with the foods we eat, just like another crop to be engineered or another breed to be perfected, we will surely lose our awe of humanity and undermine all sense of human dignity.

Journal Reading :: essays research papers

Introduction: Journaling is a powerful thing; there are many different uses for a Journal, everything from personal thoughts to keeping an expedition written down for later resource. Many people don’t use Journals which is unfortunate, my focus in this paper is to show the different areas of Journaling and to possibly make it a part of your life. Thesis: My thesis statement is to show the importance of journaling in leadership and other positions.   Ã‚  Ã‚  Ã‚  Ã‚  Getting started, it doesn’t take much to get started, all you need is a pen or pencil, preferably a pencil incase you need to change something, but a wise teacher once told me that his mom asked him a very interesting question, â€Å" What do you use on crossword puzzles, a pen or a pencil,† she then later stated â€Å" I always do mine in pen,† now the reason behind her always doing it in pen is so you know you did it write the first time, and you feel confident in that. The next thing you would or should need is something to write on, this can be anything from a purchased store journal to napkin from a restaurant, although having a booklet of napkins may seem absurd, it doesn’t matter as long as it’s something to take your thoughts down on. The other thing that you should have is a positive attitude, trust me it is helpful in all aspects of life, a great man once said, â€Å" The greatest discovery of my generation is that hum an being can alter their lives by altering their attitude of mind by William James.† (Pg.88 John Maxwell The 21 Indispensable Qualities of a leader). That’s about all it should take to start a effective journal, so stay focused as we will be going through the Purpose of Journaling. The first area I would like to delve into is the thinking aspect of Journaling. I don’t know about you, but I like to think, it makes me feel like I’m the smartest man in the world. I took this class called Practicum Seminar Leadership and for the class we had to go on a solo trip for about 3 days, by ourselves, and I thought a lot while I was out there and I wish I had, had a journal to keep all my thoughts down in, because some of them were lost, but I came out of there with a deep understanding of what it means to be positive.

Material Science Essay

Abstract In this assignment I will be defining the 3 essential properties of every material and describing those. I would also be describing how silicon-based semiconductors revolutionized computing. I will also define what microchips are and how they relate to integrate circuits. Since the pressing questions about the increasing ability of computers to quickly process large amounts of information is whether a computer can be built that is considered â€Å"alive† or â€Å"conscious.† I will also be defining artificial intelligence and telling the difference between the human brain and the central processing unit of a computer. Material Science There are three essential properties of every material that scientists use as a foundation for most every study. First it is the kind of atoms that is made up from the material. There are the neutral elements and the compound elements. The neutral elements would have the identical amount of protons and electrons; this would essentially terminate one another, which would leave the protons and electrons neutral. The compound element is when there is a combination of more than one element. The atoms are second in the way that they are arranged. A great way to explain this is by relating atoms of liquid and atoms of solids. For example the atoms of liquids move around allowing the atoms of solids which are packed together. The way that atoms are attached together is number three. These are the key properties when understanding the study of materials. The strong point of the material, this is the capability to endure forces being useful to it without breaking, this is first. The materials elasticity is second, which is the capability to flex while returning to its original form. Number three is the materials plasticity; this is the ability to change its shape forever. Thanks to the starter of semiconductors, computers have developed over a billion times faster than one of the first built in 1946 (ENIAC). Describe how silicon-based semiconductors revolutionized computing. Since silicone semiconductors are capable to move easily through the solid component it is more proficient than copper based conductors. Silicone based conductor’s makes holes which produces and fills a space constantly. This means electrons jump from one atom to another. This will also change the silicon through a process called doping by adding either phosphorus or aluminum the desired effect is achieved. When adding phosphorus to silicon it develops n-type which is negative-semiconductor. When adding aluminum to silicone it develops p-type semiconductors. These are both essential parts functions efficient electrical devices microchips, which are used in computers. Microchips are positive and negative type semiconductors. Microchips do a detailed function. A microchip is individual diodes and transistors will play a big part of the essential function in modern electronics, although these strategies have been mainly replaced by much more complex arrays of P- and N- kind semiconductors, known as microchips. Microchips may join hundreds or thousands of transistors in one integrated circuit, particularly intended to do a specific role. They are related to integrated circuits this is why. Combined circuits (microchips) are the main component in devices such as microwave calculators, and other devices. An integrated circuit microprocessor lies on modern technology. Modern technology is occupied with electrical integrated circuits. Such as, Televisions, MP3 players and computers all contain integrated circuit which allows them to perform specific functions. Also known as microchips or microprocessors, these circuits keep track of all the information being transferred within the device, in essence giving it life. Jack Kilby and Robert Noyce are both who take credit with inventing the integrated circuit, both coming up with the idea within a year of each other while working for separate companies. Artificial Intelligence is a division of science which deals with helping machines and finds explanations to complex problems in a more human like manner. This normally contains borrowing features from human intelligence, and applying them as procedures in a computer friendly way. A more or less well-organized approach can be taken depending on the necessities recognized, which impacts how artificial the intelligent performance seems. (http://ai-depot.com/Intro.html) The 2 essential differences between human brains and the central processing unit of a computer is the brain-computer metaphor has served intellectual psychology well, research in intellectual neuroscience has revealed many significant changes between brains and computers. Escalating these differences may be crucial to understanding the mechanisms of neural information processing, and eventually for the creation of artificial intelligence. (http://scienceblogs.com/developingintelligence/2007/03/27/why-the-brain-is-not-like-a-co/) One difference is that brains are analogue and computers are digital. For instance one of the primary devices of information communication appears to be the amount at which neurons fire a fundamentally unbroken variable. Likewise, networks of neurons can fire in relative synchrony or in relative confusion; the coherence affects the strength of the signals received by downstream neurons. Lastly, inside each and every neuron is a leaky integrator circuit, composed of a diversity of ion channels and endlessly changing membrane potentials. (http://scienceblogs.com/developingintelligence/2007/03/27/why-the-brain-is-not-like-a-co/) Another difference is short-term memory is not like RAM. While the superficial similarities between RAM and short-term memory encouraged many early intellectual psychologists, a closer examination reveals strikingly important differences. Although RAM and short-term memory both seem to required power, short-term seems to hold only to long-term memory however. RAM holds data that is Isomorphic which is having similar appearance but different ancestry. Not like RAM, the capacity limit of short-term memory is not fixed, the capacity of short-term memory seems to vary with differences in processing speed as well as with expertise and understanding. (http://scienceblogs.com/developingintelligence/2007/03/27/why-the-brain-is-not-like-a-co/)

The Effects of Bullying on Childhood Development - 906 Words

Bullying is everywhere; it takes place in the home, office, cyberspace and schools; bullying is especially common in schools. Schools are supposed to be a haven for children to learn and build educational and social skills. However, the ill effects of bullying are disrupting children’s education, social skills, and lives. According to a youth risk and behavior survey (2011), approximately 20% of students in grades nine through twelve have been bullied (Heintz 1). Bullying was once thought as a normal part of childhood development; however, in recent years bullying is classified as a major health concern (Tusinski 10). Bullying can have dire effects on children’s psychological and social development. As stated by Karin Tusinski, â€Å"victims of bullying often experienced problems of depression, anxiety, and low self-esteem, as well as difficulties at school† (11). In addition, the aftereffects of bullying can follow children throughout adulthood; therefore, it is critical to eliminate bullying from the start to ensure it does not cause long lasting effects on its victims. Parents and students must be educated on the effects of bullying in hopes of thwarting it. What is Bullying? â€Å"Bullying is the use of force, threat or coercion to abuse, intimidate or aggressively impose domination over others† (Heintz 1). In principle, bullying can be viewed as a form of physical or psychological violence; which is usually repetitive in nature. Bullying comes in three forms, physical,Show MoreRelatedThe Lifetime Effects Of Bullying And Bullied808 Words   |  4 PagesTopic: The lifetime effects of bullying and being bullied General Purpose: To inform Specific Purpose: To give a clear understanding of the various concepts and theories the effects of bullying and/or being bullied can have on people during their adult lifespan. 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Social factor that affects health of LGBT youth include education, neighborhood condition, early childhood development, racism, working conditions, incomeRead Moreforce have contributed to a dramatic shift in family eating habits. The traditional family dinner900 Words   |  4 Pagesof safe neighborhoods also contribute to increases in childhood obesity. Our local community lacks organized opportunities for safe, recreational activities; therefore, in the absence of adult caregivers, many latch-key children are instructed to remain inside the home, watch television, play video games or surf the Internet. These sedentary lifestyle choices do not encourage active engagement which results in increases in incidents of childhood obesity. Our local school district’s socioeconomic statusRead MoreBullying And The Act Of Bullying Essay1660 Words   |  7 Pages----------- One may assume bullying in schools was all too common. And of course, in the end, they would absolutely right. For whether one has been the victim of bullying or, perhaps, a perpetrator of it, themselves, one has no doubt been exposed to stories of bullies through friends and family, as much as through movies and media. Indeed, it seems like bullying itself is a theme inseperable theme from one’s childhood or adolescent experience inc school. Whether was the victim of it or not, theyRead MoreThe On Signs Of Biosocial, Cognitive And Psychosocial Development1364 Words   |  6 PagesHowever, for middle children which are between the ages of 7 through12 this time may seem more like a nightmare because it marks the time when they undergo physical and mental changes. These physical and mental changes have a major impact on their development. The subject in this scenario is a little boy named Mark who is being bullied at school by a group of older boys to the point that he has received bruises from the encounters. As a result, Mark dislikes going to school for the fear of being embarrassedRead MoreDiminished Self-concept and Value After Bullying Essay721 Words   |  3 PagesChild development, bullying The weak, bully others†¦. If people throw stones at you take them up and build something According to well known psychologist Erik Erikson every child passes through various stages of development at the respective ages in their life for example infancy, early childhood, preschool, school age, adolescence his is constant for the fast majority; with few exceptions. These stages have adverse effects on these children; development itself is a hurdle that every child hasRead MorePersuasive Speech : Bullying By Giving Reasons Why They Should Not Bully1132 Words   |  5 PagesTopic: Bullying General Purpose: To persuade. Specific Purpose: To persuade the audience to think before bullying by giving reasons why they should not bully. 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