experiment is to test whether more water moves out of a potato when it is placed in a sweeter sucrose solution than a potato in a less sweet solution. The hypothesis of the experiment is that we expect more water to move out of the potato placed in the sweet solution than the potato placed in a less sweet solution. Independent variable: concentration of sucrose‚ concentrations: pure water H20‚ 0.1 M‚ 0.5M‚ 1M‚ 2M. Dependent variable: weight of potato sticks‚ original weight 0.7 grams. Controlled
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contain the ideas or writing of other individuals/authors. _Alexandra DeWitt_____________ __5/1/13____________ Author Date _10_________ Lab Section # Increasing Sucrose Concentrations Causes the Osmotic Concentrations of Disks of Potato Tubers to Decrease Abstract: Introduction: The biological membranes are composed of phospholipid bilayers‚ each phospholipid with hydrophilic heads and hydrophobic tails‚ and proteins. This arrangement of the proteins and lipids produces a selectively
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of the potato piece must be kept the same in each experiment primarily because they affect the surface area of the piece‚ and varying surface area could have a great effect on the rate of osmosis. This is because in an experiment where the potato chip has a large surface area‚ there is a larger area of partially permeable membrane and therefore more opportunity for water particles to pass through. I will keep the surface area the same by keeping the mass and length of the potato piece
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wrote “It is remarkable that the same plant should be found on the sterile mountains of Central Chile‚ where a drop of rain does not fall for more than six months‚ and within the damp forests of the southern islands” (Chapaman). He was speaking of the potato‚ and its ability to adapt to a variety of climates‚ from the semiarid to the tropical wet. Potatoes also have high nutritional value. They supply every vitamin and mineral that a body needs except for vitamin A‚ vitamin D‚ and calcium (Chapaman).
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pressure exerted on either side of the semi-permeable membrane. A potato (Solanum Tuberosum) contains 92% water‚ which is an osmotically active component. The precise osmotic potential of sweet potatoes is however unknown. The osmotic potential of sucrose is know to be at 20 oC‚ the osmotic potential of sucrose is 2.436 MPa2. The rate of osmosis will be calculated by measuring the percentage change in mass of a piece of potato‚ that has been submerged in a specific concentration of sucrose over
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McCain buys 12% of the British potato crop. McCain is also one of the world’s largest frozen foods companies. McCain is a privately owned company with a strong market focus. This means that it carries out research to find out what consumers want. It then uses this market information to create products that consumers want to buy. McCain’s business focuses on frozen potato products and frozen light meals. It provides consumers with a wide variety of cut and seasoned potato products through UK retailers
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Exercise 1 – Potato Change in Mass versus Sucrose Concentrations Introduction: This exercise involves estimating the osmotic concentration of potato tuber cells by using a change in mass method. The null hypothesis states that there will be no change of mass of the potato disks after they have been incubated in any sucrose solution. This means that the concentration of sucrose that the potatoes are in will no effect the movement of water in or out of the potato cells. However‚ the alternative hypothesis
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But the main methods of traditional Belarusian cuisine are carefully kept by the people. Common in Belarusian cuisine were dishes from potato which is called among people "the second bread". The Belarusians bring fame to their beloved potato in their verses‚ songs‚ dances. There are special potato cafes in the country where you can try various potato dishes. Potato is included into many salads‚ it is served together with mushrooms‚ meat; different pirazhki (patties) and baked puddings are made from
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Taking place in Ireland‚ the potato was a main food source for the poor‚ and from the 1830’s-1840’s the “Irish Lumper” potato was grown on a large scale. This particular potato‚ however was overcome by a disease called late blight. Eventually almost the entire potato crop had become diseased leaving behind infertile soil for new crops to grow. With no potatoes the people starved which then caused
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the Irish and the impact that the potato had on their culture. The author will outline the stages of development from before the introduction of the potato to the acceptance of it as a winter vegetable. The author will also describe what effects the great famine had on Irish cuisine. The article will discuss the varieties of food‚ including the potato‚ eaten throughout the years‚ the methods of production at different levels of society‚ and a number of Irish potato dishes including boxty‚ champ‚ and
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