Free Essays on Effect Of Tv On Children

Effects of TV on Children Sitting in school, little Jane sits anxiously watching the clock. The teacher is talking to the class, but Jane just can't wait to get home. When the bell finally rings, she runs out of the classroom, and all the way home. After blasting in the house, she runs to turn on the TV. Having nothing more exciting to do, Jane will sit in front of the television until her mom pulls her away for dinner. This is an all to familiar scenario in many American homes today. What many people don't realize are the problems that can develop from young children watching too much TV. Many emerging dilemmas are resulting from this concern. When a young child with a maturing brain sits in front of the TV for several hours every day, it can instigate loss of creativity, impatience, and violence further along down the road. The ability to be creative is an important factor in the development of a young child's mind. By sitting down and watching TV for a couple hours, the child is entertained, but is also not thinking. Information in spoon-fed to them, so when it comes time to read a book in school, some can have a hard time grasping ideas. They are so used to having images flash before them to provide understanding; they have trouble moving their eyes side to side to gather the information for themselves. With the TV in front of them, supplying amusement, they may never stop to think that putting a puzzle together, or reading a book could also be fun. They could actually become dependent on this one source of fantasy, and never bother to create their own. As the child grows older, it is less likely to put effort into playing with other kids, or taking up a hobby. While losing creativity, the child can also gain impatience. By having all the stories and facts plastered clear in front of them, they can easily loose interest sitting in a classroom all day. Even during their favorite TV show, there is a brief change of pace in the s... Free Essays on Effect Of Tv On Children Free Essays on Effect Of Tv On Children Effects of TV on Children Sitting in school, little Jane sits anxiously watching the clock. The teacher is talking to the class, but Jane just can't wait to get home. When the bell finally rings, she runs out of the classroom, and all the way home. After blasting in the house, she runs to turn on the TV. Having nothing more exciting to do, Jane will sit in front of the television until her mom pulls her away for dinner. This is an all to familiar scenario in many American homes today. What many people don't realize are the problems that can develop from young children watching too much TV. Many emerging dilemmas are resulting from this concern. When a young child with a maturing brain sits in front of the TV for several hours every day, it can instigate loss of creativity, impatience, and violence further along down the road. The ability to be creative is an important factor in the development of a young child's mind. By sitting down and watching TV for a couple hours, the child is entertained, but is also not thinking. Information in spoon-fed to them, so when it comes time to read a book in school, some can have a hard time grasping ideas. They are so used to having images flash before them to provide understanding; they have trouble moving their eyes side to side to gather the information for themselves. With the TV in front of them, supplying amusement, they may never stop to think that putting a puzzle together, or reading a book could also be fun. They could actually become dependent on this one source of fantasy, and never bother to create their own. As the child grows older, it is less likely to put effort into playing with other kids, or taking up a hobby. While losing creativity, the child can also gain impatience. By having all the stories and facts plastered clear in front of them, they can easily loose interest sitting in a classroom all day. Even during their favorite TV show, there is a brief change of pace in the s...

Comprar ropa de marca barata en NY

Comprar ropa de marca barata en NY Si, en general, Estados Unidos, es la meca de las compras, Nueva York, en particular, es el paraà ­so, a pesar de tener un impuesto a las ventas que se encuentra entre los ms altos del paà ­s. Una de las mejores formas para comprar ropa de marca barata son las sample sales.  ¿Quà © son las sample sales y cunto se ahorra? En las sample sales en sentido estricto los diseà ±adores venden artà ­culos que nunca se llegaron a vender en tienda. Pueden ser, por ejemplo, prototipos para el showroom para compradores o dueà ±os de tiendas o ejemplos que se fabricaron para testar su aceptacià ³n o productos fabricados que se quedaron en stock porque no llegaron a venderse a tiendas. Generalmente los diseà ±adores hacen dos o tres samples sales al aà ±o, si bien algunos showrooms estn abiertos continuamente. Los artà ­culos en un sample sale deben costar como un 50 por ciento menos que un artà ­culo igual o semejante en tienda, si se trata de ropa. A veces el gran problema con los sample sales de ropa son los tallajes. Si son modelos de pasarela para mujer, esperar talla 0 de Estados Unidos. Si es para showroom, entre talla 4 y la 6. Si son accesorios, la rebaja pude ser de entre el 50 y el 70 por ciento. Los bienes que se compran en un sample sale son de la temporada actual o de la siguiente, por lo que es posible estar comprando en agosto ropa de invierno y en enero de verano. Cà ³mo saber en quà © lugar se celebra una sample sale en Nueva York y de quà © diseà ±ador Para estar al dà ­a sobre sample sales puntuales, se puede obtener informacià ³n en las siguientes pginas web: 260samplesale.com. Esta es una tienda de 5,000 pies cuadrados ubicada en un bajo en la Quinta Avenida entre las calles 28 y 29. Cambia continuamente de marcas. Es un muy interesante que realiza sample sales para marcas como J.Crew, Calypso, Elie Tahari, Diptyque, La Perla, etc. Para estar al dà ­a es posible anotarse o seguirlos en las redes sociales. Bargainhotline.com. Brinda informacià ³n sobre showrooms, sample y warehouse sales. Desde cierres de tiendas con grandes descuentos a alta costura. Admite suscripciones para ser alertados por email por $50 al aà ±o. Para turistas ofrece la posibilidad de anotarse por sà ³lo una semana por $8 (admite pagos por paypal). Clothingline.com. Ofrecen en su local sample sales de fabricantes como J.Crew, Jacadi, Helmut Lang, Theory o Tory Burch. Suscripcià ³n gratuita para recibir informacià ³n de ventas actuales y futuras. Lazarshopping.com. Es una de las mejores fuentes de informacià ³n sobre todo tipo de compras a precio rebajado. Brinda la posibilidad de suscripcià ³n gratuita con acceso limitado o de pago con mayor informacià ³n y de ultimà ­sima hora.Sample, warehouse, retail, charity sales y tambià ©n discount, consigment y outlet. Shop Gotham Garment District Walking Tour. Este es realmente un tour por el Distrito de la Moda. Tiene un costo de $70 por persona pero es una forma de acceder con guà ­a a showrooms y samples sales a los que de otro modo no es posible. Se recomienda preguntar antes sobre quà © cubre el tour para asegurarse que interesa (ya que los gustos de todos no son los mismos). Topbutton.com. Brinda suscripcià ³n gratis para recibir correos electrà ³nicos con ofertas. Incluye no sà ³lo Nueva York sino tambià ©n Nueva Jersey y Connecticut. Sus listas incluyen moda, novias, viajes, productos gourmet, belleza, decoracià ³n e incluso eventos. Consejos para tener à ©xito en las sample sales Hay que saber la direccià ³n exacta. Las ventas pueden tener lugar en almacenes u oficinas sin letreros.Las mejores horas para comprar son a primera hora (ms mercancà ­a) o a à ºltima (precios ms rebajados). La peor hora es la del almuerzo.Salvo excepciones, las ventas son finales. Esto quiere decir que no habr cambios.  Informarse sobre si es posible probar la ropa. No siempre hay probadores.Ir con dinero en efectivo ya que no siempre se aceptan tarjetas de crà ©dito o dà ©bito. Otras formas de obtener ropa de marca con precios rebajados Grandes almacenes Bloomingdale ´s. El Centro de visitantes (Visitor ´s Center) est ubicado en el balcà ³n (balcon) del primer piso (en EEUU el primer piso es el de la entrada).  Por compras superiores a $50 cada visitante tiene derecho a un regalo. Ahà ­ tambià ©n se puede solicitar ayuda con un personal shopper, con traductores, compra de tickets para eventos o restaurantes y cambio de moneda. Adems, puede solicitarse que se envà ­e las compras al hotel (si se gastà ³ ms de $250 puede ser gratis). Century 21 en el Centro Financiero pero tambià ©n en otras ubicaciones. Hay que buscar, pero se encuentran grandes cosas. Cada planta est repleta de turistas (y locales). FAO Schwarz Toy Store. Se puede solicitar gratuitamente un personal shopper, es una manera de evitar largas colas en à ©pocas de fiestas. Es posible solicitar que envà ­en las compras al hotel, pero hay que pagar una tarifa. Adems, previo pago de $40 por persona se puede hacer un tour de la tienda antes de la apertura, estando incluido el desayuno. Macys. Los turistas internacionales pueden obtener un 11 por ciento de descuento en todas sus compras. Presentar el pasaporte en el Visitor ´s Center, que est situado en la mezzanine (entrada por Sexta Avenida con la calle 34). Outlets El gran outlet para comprar ropa y otros artà ­culos de marca es Woodbury Common Premium Outlet, a una hora en auto de la ciudad de Nueva York. Preguntar en los hoteles. Tambià ©n es posible ir en bus desde Port Authority. Si se consigue un librito de cupones para mayores descuentos, no dudar en utilizarlos. A tener en cuenta Antes de comprar verificar que realmente es una buena compra. Comparar precios en bluefly.com.Para comprar productos como cmaras fotogrficas o de video considerar BH, en la octava avenida con la calle 34. Es un comercio de gran prestigio y precios ajustados que ofrece la posibilidad de garantà ­as internacionales. Tener presente que est regentado por judà ­os ortodoxos y, por lo tanto, est cerrado el sbado. (Incluso no es posible comprar en su pgina web desde que cae el sol el viernes hasta que acaba el sabbath).Estados Unidos pone un là ­mite en la cantidad de dinero en efectivo que se pueden traer al paà ­s sin declarar en las aduanas. Pero jams pone un là ­mite a lo que un extranjero se puede gastar en compras en el paà ­s.

Technology (Jeff Hans multi-touch sensor + applications protaining to Essay

Technology (Jeff Hans multi-touch sensor + applications protaining to this new software ) - Essay Example We have came a long way since 1979 and have witnessed many new advancements made in this field but none compare to the creation of Jeff Han’s Multi-touch sensor. Developed in NYUs Department of Computer Science, the multi-touch sensor is a revolutionary device that will forever change the way humans interact with machines. The multi-touch sensor in its simplest form is an advance version of the touch screen interface. A touch screen is a unique input device that eliminates the conventional use of the computer’s mouse and keyboard and replaces it with the use of a human hand and a touch sensitive screen. The concept of using human touch as the means to communicate becoming popular, owes its origins to the works of Sherrick (1985) and Rollmam (1999), changing the paradigm of commands and input devices in a computer controlled environment. (1). Unlike its predecessor the multi-touch system has the capabilities to recognize more then just one touch point. A touch point is the contact made on a particular touch screen; this is possible by sensors that pick up the pressure made form the human touch, the heat from a human hand, and or cameras that capture the actual touch made. Software programs can be written to make use of this technology to vastly enhance the interaction between the human and the c omputer. (2). The significance of the multi-touch interface can not be adequately understood unless one knows the significance of a regular touch screen. Touch screens in general already eliminate the use of the bulky keyboard and mouse. This presents a friendly outlook on the computer experience which enables the creation of a flux in user. It eliminates the analogy of the word desktop and actually transforms the computer in to an actual desk. This effect is crated by the touch screen interface that allows users to touch what they see. No longer are icons and images viewed as being an abstract object on a screen, but through the means of the touch screen they

Nternational Relations Essay Example | Topics and Well Written Essays - 1500 words

Nternational Relations - Essay Example This was mainly achieved through the department of security sending us troops to war torn countries to bring peace and also engaging warring groups in peace talks. It is noted that America was greatly involved in the creation of the international court of justice in Yugoslavia to bring to book the perpetrators of crimes during the long period of war that hit the nation (Sewall, Sarah, & Carl). The perpetrators of the Rwandan genocide were also charged before an international court, which was established in Kampala by the efforts of the American government in its bid to ensure international peace and security is maintained at all times. USA has always been in the forefront agitating for global peace, and that can be denoted by its numerous efforts in implementing that very policy. That notwithstanding in 1990 it was the US government that came up with the idea of coming up with an international court that would be responsible of prosecuting individuals who committed certain crimes that jeopardize international peace and security (Sewall, Sarah, & Carl). It is from this idea that the Rome Statue was developed and implemented to create the international criminal court which is responsible of ensuring perpetrators of crimes against humanity are prosecuted and charged according to the procedures of the court regardless of the legal procedures that exist in their respective countries of residence. The US government was committed to the constitution of the Rome statue until it reached a point where the interests of the US governments and those of its citizens were not considered in the provisions that sought to form the international criminal court. It is from this instance that USA decided to cut its cooperation and support of the whole process which would later come to from the ICC (Sewall, Sarah & Carl). USA as the world superpower is involved in a number of

Case 2 Study Example | Topics and Well Written Essays - 500 words

2 - Case Study Example The firm had a profound financial standing while it enjoys a drastic market across the world. It is worth noting that G.E has a comprehensive system of operation that reduces wastage while promoting optimal utilization of organizational resources. The firm also benefits from a thorough company culture that attracts wide and detailed talents from all occupations. The firm enjoys an extensive facility development commitment in the end. The political environment presents an ideal stability for GE to conduct business. The challenges in the worlds environmental status present opportunities for the firm to achieve much. The technological environment allows the firm to generate innovative solutions benefiting its society and customers (Reed & Neubert, 2011). However, the legal environment poses much risk for the firm in terms of legal fees and litigation processes due to the Ecomagination policy. It is for this reason that GE has a vision and commitment of harnessing its global capabilities, market knowledge, and technology leadership while taking on the worlds tough struggles and accelerating company growth. The turbine expertise acts as the strength of the company and enhances quick moves towards renewable energy. However, one of the weaknesses of the company is the poor outlay of the communication channels set. The environmental sustainability campaign by government succeeds in presenting GE with an opportunity to engage in environmentally and socially responsible actions.In addition, the company meets the consumer’s future and current needs (Reed & Neubert, 2011). However, a threat coming with these efforts is that the public may mislead the intentions of the company leading to decline in the company’s reputation. The firm, has launched healthymagination and ecomagination as branding initiatives that highlight the commitment of the company towards social responsibility and

Profiling And Investigating Serious Crimes Criminology Essay

Profiling And Investigating Serious Crimes Criminology Essay The attempt to locate an offender is one of the most important functions of a criminal investigation, geographic profiling is based on the assumption that victim selection is spatially biased toward an offenders home location. It will also explore the strengthens, weakness and the criticisms of geographic profiling. In order to do this it will critical analyse the theoretical underpinnings of geographical profiling, such as: rational activity theory; crime pattern theories. The rational activity theory is based on the idea that an offenders perceptions of the environment is very important in the decision making process. Is important to include the least effort principle, is based on the idea that an offender is more likely to act on the first or the closest opportunity. Crime pattern theory is based on the idea that an offender emphasizes the interaction of awareness of space or mental map of the spatial surroundings, and the distribution of suitable targets. According to Cohen and F elson (1979) this type of decision are not chosen randomly. This essay, will consider potential difficulties which may occur though the use of techniques in geographic profiling. It will also look at the use of statistical programmes to analyse spatial behaviour, and it will take into consideration the reliability, validity and utility of the application of this method. It will also exam the Rail Rapist case to illustrate how effective geographic profiling techniques it will be compared one of the best-known offender profiling failures in Britain which was the case of Rachel Nickell in 1992. According to Rossmo (1995, cited in Canter and Young, 2008, p.97) geographical profiling is a method through which target location patterns of serial violent offenders are used to establish spatial information about the offender, generally about the location of future offences or the offenders residence. Rossmos (1995, cited in Canter and Young, 2008) method of offender profiling tends to emphasize cases of serial nature only (i.e. murder, rape, arson, bombings). However, Ainsworth (2001, p.87) argues that: This technique will only be truly effective when the police have accurate data on each and every crime in a series. If not all crimes are recorded accurately, or are not recorded as having been committed by the same perpetrator, the technique will be much less useful. Geographic profiling can be seen as an outcome of environmental criminology, which tend to focus on how the perpetrators and their targets come across each other in time and space, this approach has little interest on the offenders motivations to engage in such activities (Bottoms and Wiles, 1992). Environmental criminology owes much to the concepts of social geography, particularly that of cognitive mapping; the process by which individuals learn about, remember and use knowledge about an area (Brantingham and Brantingham, 1984; Canter and Young, 2008). However, Rossmo (1999, p.88) indicates that this is not fully the case and proposes that: The representation is of the individuals subjective image of place (not a conventional map) and not only includes knowledge of features and spatial relationships but also reflects the individual preferences for attitudes towards places. à ¢Ã¢â€š ¬Ã‚ ¦ The product of this process, at any point in time, is a mental or cognitive map and can be shown cartographically as a perception surface. In this way individuals store subjective information about their spatial environment; every individual has their own mental map which is developed from their childhood to adult life, as they become more experienced the more extensive their internal map is going to be. Furthermore, most offenders prefer to carry out their activities in very familiar areas and through their routine daily activities, such as: where they work, friends and family homes, where they socialize, previous home address) individuals are likely to become very familiar with their neighbourhood, in this context an offender has to know well particular area before he decided to act (Rossmo, 1998). It is clear that some types of offences happen more often in certain places and at certain times. Furthermore, Cohen and Felson (1979) suggests that routine activity theory is based on the idea of that for a crime to be committed there must be a motivated offender, a suitable target and the absence of a suitable guardian against a violation. The implication is that, the manipulation of any of these elements will change peoples behaviour and also might prevent crime. Another factor which can strongly influence crime site choices is known by psychologists as the least effort principle or known by geographers as nearness principle. The principle of least effort, might suggest that people restrict their outputs of energy, both mental and physical, the minimum compatible with achieving his ends (Martinet, 1962, p.139). For example, people tend to go to nearby shops wherever possible, and they are less likely to visit relatives or friends that live far away, this is because of the time and effort involved in the journey from their own homes to their destination. However, if people have something in particular or special to buy they are willing to make an effort to go somewhere else to get it, even if that means travel longer than usual, the same principle applies to offenders they are also willing to travel longer distances, if the reward is greater. One of the strengths of crime place theories is that it can be easily used to assist police investigations, for example, Rossmo (1995) has suggested that a careful consideration of the exact location of a series of crime can be helpful in identifying the most likely area in which an offender lives or works. The aim of geographic profiling is not to give the specific identity of the offender; instead the aim is to narrow the field of the investigation and suggest the type of person who committed the crime (Douglas et al, 1986). Rossmos (1995) work established that a computer mapping system known as Criminal Geographic Targeting (CGT), which assesses the spatial characteristics of a crime based on these principles, could indicate the area in which a serial offender is likely to be living. Rossmo (1995) indicates that the crucial constants and exponents in the decay functions on which his software is built are empirically determined. The programme predictive power is related to the numb er of crime sites, and the more sites the better. However, Rossmo (1995) does not provide full information on what the empirical basis of this determination is nor does he make it clear if the same exponent is used in all calculations. As Turvey (1999) suggests, geographical profiling, like trait analysis or future crime prediction, relies heavily on a particular manifestation of behaviour for example, offence location selection) and attempts to infer meaning from the overall emotional context. He believes that, geographical profiling cannot differentiate between two similar offenders working in the same area and might wrongly allocate crimes to the wrong person. As an implication, it can make the Criminal Justice System ineffective. Therefore, this type of technique can be only truly effective when the police have an accurate data of each and every case of crime in series. To support Rossmos (1995) arguments of the success of geographic profiling, this essay it will exam at the case of John Duffy the so called railway rapist (cited in Ainsworth, 2001, p.9). Duff had committed a series of rapes and three murders in the Greater London area between 1983 and 1986, the police resources devoted to the task of solving these crimes were enormous, yet little real progress had been made in the hunt for the attacker. Psychologist Canter (1994) cited in Ainsworth (2001) was called in to aid the police investigation, Canter had little to go in terms of where to start, yet he used a number of psychological principles and sifted though the large amount of data collected by the police. He eventually, produced a profile of the sort of individual whom he felt the police should be looking for. Canter suggested that the attacker lived in the area near to area of first crime; probably live with a woman; in his mid to late 20s; right-handed; semi-skilled or skilled job with weekend work; great knowledge of railway; had previous criminal record (maybe arrested between October 1982 and January 1984). It turned out that the offender lived in the area suggested by Canter; aged late 20s; recently separated from his wife; right-handed; travelling carpenter employed by British Rail. Canter (1994), believes that through the crime essential clues are left behind and the unique personality of the offender shows through in some ways. Thus, it is thought that the way in which the crime is committed is in part a reflection of the everyday behaviour of the individual. Ainsworth (2001, p.95) points out, that considering the case of John Duffy, we can see how a detailed knowledge of the patterns of his crimes was helpful in understanding his behaviour. Canter (1994), was able to establish that the three first crimes formed a triangle within which he probably lived. In contradiction, one of the best-known offender profiling failures in Britain was the case of Rachel Nickell. Rachel Nickell was a young woman who was brutally murdered in mid-morning while walking on Wimbledon Common in south London in July 1992. As part of the investigation into the killing, a profile was commissioned from Paul Britton, a clinical psychologist (cited in Ormerod, 1995). A suspect was eventually identified and it was noted that he seemed to fit the profile well. An elaborate operation, drawing partly but not only on the profile, was put together in which a police woman befriended the socially isolated and inadequate suspect, offering the promise of an intimate relationship in exchange for descriptions of his sexual fantasies and a confession that he murdered the woman on the Common. The confession was not forthcoming, but he was still arrested. The case fell apart because of the lack of evidence and because the psychological profile did not work in this case. As an implication, geographical profiling involves objective measures, it still relies on individual interpretation, which makes it subject to the interpreters knowledge and expertise. The Duffy example shows that in some cases but not all, profiling can be beneficial, however it not right to assume that the results are always going to be successful in every single case. Holmes and Holmes believe that offender profiling tend to be more useful when there is a psychopathology involved, for example; a sadistic assault, and go even further by stating that: Profiling has three major goals. These attempt to provide the criminal justice system with information, especially; first, a social and psychological of the offender; second, a psychological evaluation of possessions found with suspected offenders; third, consultation with law enforcement officials on the strategies which might best be employed when investigating suspects. (Holmes and Holmes, 1999, p.156) It is very difficult to predict when a case is going to be successful or not, however even if a profiler proves to be fifty per cent correct, how can this be counted as success or failure? And what if any other information used in the investigation provided by a profiler it helps in catching a criminal is this considered successful?, even if the rest of the information provided have no use for the investigation? To conclude, this essay has provided relative information about how geographic offender profiling and criminal mapping have to offer to its practitioners. This idea of crime mapping it can be seen as relatively new, and have been only made possible thanks to the introduction of software programmes such as, Criminal Geographic Targeting (CGT), however some authors suggested that crime mapping is experiencing a large amount of interest among professional and academics. This essay considered how important the relationship between crime, space and time are which can be seen as strength or a criticism at the same time, because it moves away from the offender and focus in the location where crime occurs. However, as suggested in this essay, is very difficult to collect a complete accurate picture, this approach tends to rely on exact amount of data collected by the police, sometimes public may not report the crime accurately or not report it at all or even the police might also fail to record or even miss-record crime on its real location. Another criticism is that while geographical profiling involves objective measures, it still relies on individual interpretation, which makes it subject to the interpreters knowledge and expertise. It is clear that some offences happen more often in certain places and at certain times, and the way in which crime occur is rarely random, is important to have a better understanding of why offenders tend to offend in particular places at certain time. By examining the Railway Rapist case is obvious that a better understanding of patterns of his crime helped Canter to establish a profile, however is important to establish that geographic profiling is not always successful. The way in which individuals store subjective information about their spatial environment; every individual has their own mental map which is developed from their childhood to adult life, as they become more experienced the more extensive their internal map is going to be.

In this experiment we are going to be studying the affects of Osmosis :: GCSE Biology Osmosis Coursework

In this experiment we are going to be studying the affects of Osmosis in Potatoes. Osmosis is the passage of water from a region of high water concentration through a semi-permeable membrane to a region of low water concentration. A semi-permeable membrane is a very a very thin layer of material, cell membranes are semi-permeable. These will allow some things to pass through, but will prevent other things from passing through. For example, cell membranes will allow small molecules such as Oxygen, water, Carbon Dioxide, Ammonia, Glucose, amino acids, etc. to pass through. But they will not allow larger molecules such as Sucrose, Starch, and protein, etc. to pass through. A region of high concentration of water is either a very dilute solution of, for example, sucrose, or Pure Water. In each case there is a lot of water: there is a high concentration of water. A region of low concentration of water is a concentrated solution of something, for example, sucrose. In this case there is much less water. When one puts an animal or plant cell into a liquid which contains water three things can happen. If the medium which surrounds the cell has a higher water concentration than the cell, the cell will gain water by osmosis. Water molecules are free to pass across the cell membrane in both directions, but more water will enter the cell, than leave it. The Result of this is that water enters the cell and the cell is likely to swell up. If the medium has exactly the same water concentration as the cell, there is no overall movement. The cell will stay the same size. Water will cross the cell membrane in both directions, but the amount entering it will be the same amount leaving it, so there is no overall movement of water. The cell will stay the same size. If the medium has a lower concentration of water than the cell, the cell will lose water by osmosis. The water will cross the cell membrane in both directions, but now more water leaves the cell than entering it. The Result of this will mean the cell will shrink. Variables In this experiment I am going to cut 12 potato sections, I am going to try keeping these roughly the same size and weight. They will be around 4cm long, and all will have an average weight of 2.74g. The liquid that the potato sections will be put into will have different concentrations, but they will all have a volume of 30 cm. I am going to have 6 different test tubes which will have the same volumes but different concentrations. In this experiment we are going to be studying the affects of Osmosis :: GCSE Biology Osmosis Coursework In this experiment we are going to be studying the affects of Osmosis in Potatoes. Osmosis is the passage of water from a region of high water concentration through a semi-permeable membrane to a region of low water concentration. A semi-permeable membrane is a very a very thin layer of material, cell membranes are semi-permeable. These will allow some things to pass through, but will prevent other things from passing through. For example, cell membranes will allow small molecules such as Oxygen, water, Carbon Dioxide, Ammonia, Glucose, amino acids, etc. to pass through. But they will not allow larger molecules such as Sucrose, Starch, and protein, etc. to pass through. A region of high concentration of water is either a very dilute solution of, for example, sucrose, or Pure Water. In each case there is a lot of water: there is a high concentration of water. A region of low concentration of water is a concentrated solution of something, for example, sucrose. In this case there is much less water. When one puts an animal or plant cell into a liquid which contains water three things can happen. If the medium which surrounds the cell has a higher water concentration than the cell, the cell will gain water by osmosis. Water molecules are free to pass across the cell membrane in both directions, but more water will enter the cell, than leave it. The Result of this is that water enters the cell and the cell is likely to swell up. If the medium has exactly the same water concentration as the cell, there is no overall movement. The cell will stay the same size. Water will cross the cell membrane in both directions, but the amount entering it will be the same amount leaving it, so there is no overall movement of water. The cell will stay the same size. If the medium has a lower concentration of water than the cell, the cell will lose water by osmosis. The water will cross the cell membrane in both directions, but now more water leaves the cell than entering it. The Result of this will mean the cell will shrink. Variables In this experiment I am going to cut 12 potato sections, I am going to try keeping these roughly the same size and weight. They will be around 4cm long, and all will have an average weight of 2.74g. The liquid that the potato sections will be put into will have different concentrations, but they will all have a volume of 30 cm. I am going to have 6 different test tubes which will have the same volumes but different concentrations.