Investigate the Osmosis of Potato Cells in Various Salt Solutions Introduction I have been asked to investigate the effect of changing the concentration of a solution on the movement of water into and out of potato cells. I will be able to change the input of my experiment. The input variable will be the concentration of the solution. The 100% solution is sodium chloride dissolved in water (salt water). This will be referred to as the 100% solution from now on. But the type of solution is not important as Osmosis is all about differences in concentrations. The output variable will be the weight of the potato chips, the movement of the water into and out of the potato. Osmosis is the diffusion of water through a semi-permeable membrane from high concentration of water to a low concentration of water. The water molecules move freely through the semi-permeable membrane this is a passive process. We will do this experiment by placing potato chips in different strength solutions and checking for mass increase/decrease. Prediction I hypothesize that if we place potato chips in different strength solutions that there should be different results, some with noticeable changes in mass the other will be nearly the same. The potatoes should gain/lose mass by the movement of water. If there is a change in mass it is because water has entered or left the cell. So the experiment will be based upon the movement of water. The first potato chip will be placed in a zero percent solution. I believe that this will increase the mass. I believe this because the zero percent solution has a lower concentration then the cell sap inside the potato. The potato takes on the water through Osmosis and the cell pushes out from inside the cell making it swell and become more rigid. The second potato chip will be placed in a fifty percent solution. I believe that the mass will not change for this potato chip because the concentration of the cell sap and the solution is nearly the same. This means the concentration will be nearly even inside and outside the cell. But this does not mean that osmosis is not taking place. Osmosis is the movement of water, the water still moves between the semi-permeable membranes. The third potato chip will be placed in a hundred percent solution. I believe that this will make the potato chip shrivel and become flexible and stringy. This is because t... ... middle of paper ... ...surface area will take on more water in a set time. For example if a potato chip is cut in a wavy shape or is crinkled it could have the same weight as any other potato chip but it would have a larger surface area. This could affect your results. So you must be careful in cutting the same shape potato chips. The slight difference in our experiment was negligible so we did not take it into account but it might have helped to make one of those anomalous results. All the anomalous results were negligible. They could be caused by anything. Form a slight increase in room temperature to the cell membrane being damaged when being cut. If I were to repeat this experiment I would try to make sure there are no anomalous results. The experiment would take a longer time and would be conducted in a sterile lab where there are no possible ways of the experiment being effected. In conclusion the experiment was a success we got the results we expected and they proved our hypothesis. But this experiment could always be repeated maybe on a much larger scale over and over again. This experiment suggests that there is a connection between the concentration of a solution and the movement of water.
Investigate how the Concentration of Sucrose Solution affects the Mass of the Potato Chip Aim To find out how the concentration of sucrose solution affects the mass of the potato chip left in the solution for one day. Water Potential: The water potential of a solution is a measure of whether it is likely to lose or gain water molecules from another solution. A dilute solution, with its high proportion of free water molecules, is said to have higher water potential than a concentrated solution, because water will flow from the dilute to the concentrated solution (from a high potential to a low potential). Pure water has the highest possible water potential because water molecules will flow from pure water to any other aqueous solution, no matter how dilute. Prediction: Osmosis is the passage of water molecules from a weaker solution to a stronger solution, though a partially permeable membrane.
The National Multicultural Advisory Council, chair Neville Roach is a firm believer in continued immigration: “Australia is a multicultural society, he said. Our cultural diversity has been a strength and an asset in our development as a nation.”
Osmosis in Potato Tubes Osmosis: Osmosis is the movement of water molecules through a semi-permeable membrane from a high concentration to a low concentration. Diagram: [IMAGE] [IMAGE] Aim: To see the effects of different concentration of sugar solution on Osmosis in potato tubes. Key factor: In the investigation we change the sugar solution from: 0%-10%-20%-30%-40%-50% this is the independent variable; the dependant variable is the change in mass. Prediction: I predict that all the potato tubes in pure water or low concentration sugar solution will swell because water enters their cells by osmosis.
Shakespeare’s Romeo and Juliet – popularly considered by many to be the quintessential love story of all time – is a play that we are all familiar with in one way or another. Whether it be through the plethora of portrayals, adaptations and performances that exist or through your own reading of the play, chances are you have been acquainted with this tale of “tragic love” at some point in your life. Through this universal familiarity an odd occurrence can be noted, one of almost canonical reverence for the themes commonly believed to be central to the plot. The most widely believed theme of Romeo and Juliet is that of the ideal love unable to exist under the harsh social and political strains of this world. Out of this idea emerge two characters who, throughout history, have been heralded as the world’s greatest lovers and who have been set up as yardsticks against which future lovers must be measured. The tragic courtship between Romeo and Juliet has become so idealized and revered that even the Oxford English Dictionary lists this definition under the word ‘Romeo’:
Their heart-rending deaths are of course tragic, resulting as they do from an unforeseeable flaw in Friar Laurence's well-intentioned but unlikely plan. Their lives, however, serve to prove that young love is viable, that young people know what they want and will go to extreme lengths to find it. The fair (ie beautiful) city of Verona is a city of promise, one where young love can flourish; it is also a city where swords are drawn in an instant and where life can perish on a sword-point. In such a situation, we cannot be surprised at the existence of a smouldering feud between two prominent families (the Capulets and the Montagues) nor should we be surprised if the young people do not always follow their parents' wishes.
When I am not using them I will place them away from my experiment and
The Effect of Water Concentration on the Mass of Potato Tissue Aim: The aim of this investigation is to discover the effect of water concentration on the mass of potato tissue, and also to investigate the movement of osmosis through potato tissue. Scientific Knowledge: When a substance such as a sugar dissolves in water, the sugar molecules attract some of the water molecules and stop them moving freely. This, in effect, reduces the concentration of water molecules.
Cosmetic Surgery is the procedure done to restore or improve one’s physical appearance. The use of surgery to have an actualization of a want tends to be unneeded since it is not in line with the purpose of reestablishing what was lost or damaged. Although cosmetic surgery intends to be used for restoration purposes, many people have abused it for the sake of vanity. Cosmetic surgery also has good and bad effects on the person in many different aspects.
...hese days and is no longer accessible only to the rich and famous. Any person in the world can have the procedure they want done. Men, women and parents of small children are making the decision things about their bodies and looks each day. Plastic surgery can improve a person’s self esteem or can drastically change the life of a child or adult with deformities. No matter what the reason may be, plastic surgery is not something that is to be entered into lightly. It requires a long thought process, a search for a good and credible practitioner, support from loved ones, possible therapy and of course, a lot of money. The decision to undergo cosmetic or reconstructive surgery is intensely personal. People, for reasons as simple as a crooked nose, to the lessening of a serious scar, to those deformed by birth, accidents or injury have options available to them.
In conclusion, the benefits of cosmetic surgery differ between people and situations; any negative thoughts of others may have an effect on a person’s decision to have a procedure done, but it is for the patient to decide if changing their body is the right decision for them. Regardless of the influences on the younger generation, unrealistic ideologies of patients, and moral issues others may have, plastic surgery will continue to be a huge part of society. However, society should be focusing on how to encourage others to seek happiness in whatever they seem fit, rather than choose to destroy the aspirations of others who choose to build a perfect body for
Prediction I think that when the potato is placed in distilled water the potato mass will increase. This is because water, has, if pure, a weaker concentration than the potato, and the water molecules move in through a partially permeable membrane by osmosis. If the potato is in a high concentration salt solution, the potato mass will decrease because the potato is less concentrated than the salt solution, and the water will move through the partially permeable membrane into the stronger solution. However, if the potato mass stays the same after the experiment, this means that the water/salt solution and the potato must be of equal concentration.
The Effect of Solute Concentration on the Rate of Osmosis Aim: To test and observe how the concentration gradient between a potato and water & sugar solution will affect the rate of osmosis. Introduction: Osmosis is defined as, diffusion, or net movement, of free water molecules from high to low concentration through a semi-permeable membrane. When a substance, such as sugar (which we will be using in the experiment we are about to analyse), dissolves in water, it attracts free water molecules to itself, and in doing so, stops them from moving freely. The effect of this, is that the concentration of (free) water molecules in that environment goes down. There are less free water molecules, and therefore less water molecules to pass across a semi-permeable membrane, through which sugar molecules and other molecules attached to them are too big to diffuse across with ease.
Cosmetic surgery has become a vital component of modern-day society. It’s good has left the apprehensive glistening with confidence and poise. However, like everything else it’s bad has many times over shadowed and been disputed against. Its ability to replace flaws with ideal body features has left numerous patients with an obsession for the quest of perfection. Individuals go to large magnitudes in order to seek this perfection such as spending irrational amounts of money and for those who cannot afford these surgeries, traveling to different countries in order to get surgeries done. These surgeries that have levitated millions of insecurities have many times left the patient mentally unstable with obsession disorders or physically botched if not done correctly or by an unaccredited surgeon.
Cosmetic Surgery has been around ever since the early wars to repair scars and injuries but, “today, cosmetic plastic surgeries outnumber reconstructive ones in many countries.” (Edmonds, 2012, p. 134). Cosmetic surgery continues to grow in popularity all around the world. It has now evolved to beautify an unattractive physical appearance. In 2013, Americans spent more than seven billion dollars on cosmetic surgery according to a website titled, Healthline. Cosmetic surgery may sound ideal to someone who is unhappy with a physical appearance but it can be very dangerous. According to “The Culture of Beauty”, “analysts agree that because
Shakespeare has been a part of the American Society for many years. Compared to other Authors, he has a different style of writing but within his own writings, they are all very much alike. He has written many plays including Othello and Romeo and Juliet. Shakespeare was a man who wrote plays that followed the same literary conventions. These conventions included tragic hero, fallacy, irony, and also suspense.