How is Osmosis Affected By the Concentration PLANNING Independent Variable The independent variable in this experiment is the thing that I will be changing in the experiment. This is the range of concentrations that have been obtained by diluting the original 1M solution of Sucrose. This is therefore the only thing that is going to be altered as I am investigating how different percentage of water molecules affects the weight of the the potato thus the rate and direction of osmosis.
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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). In the past‚ they have been eaten for the purpose of protecting against diseases such as scurvy‚ tuberculosis‚ measles and dysentery (Chapaman). In comparison to grains‚ another staple food crop‚ potatoes are more productive.
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experiment‚ we had to demonstrate the process of osmosis using potatoes‚ and to determine the concentration of the cytoplasm of the potato. To demonstrate this‚ we had 6 test tubes and poured in different sucrose solutions of the following concentrations: 0.0M‚ 0.1M‚ 0.2M‚ 0.5M‚ and 1.0M. Once added in with all the sucrose solutions‚ we added in the 6 cylindrical potatoes of equal diameter and length. Before and after putting it in the potatoes‚ we had to weigh the initial and the final mass of each potato
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high water concentration (low solute concentration) to an area of low water concentration (high solute concentration). This process is called osmosis. It requires no cellular energy to be used‚ and occurs due to the random‚ continuous motion of all molecules. If a cell is placed in an environment in which the concentration of water is less than in the cell (hypertonic)‚ water will flow from the cytoplasm and/or water vacuole through the membrane into the environment. (Some solute moves into
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Popping Potatoes Is there such a thing as potatoes that pop? Popchips‚ a new generation of potato chips manufactured without frying or baking released an advertisement in 2012 featuring Katy Perry. The target audience of this ad is the younger generation of women‚ taking in consideration their mind-set and preys on their biggest obsession: to lose weight. This ad hinges on the premise that women prefer to eat the foods that they love while at the same time shedding the pounds. The primary purpose
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Potatoes are an excellent metaphor for Angus Buchan’s book‚ Faith Like Potatoes. A good-looking stalk may hide a rotten crop under ground. As is taught by Christianity‚ you may be successful in this world without God‚ but there will always be that Christ shaped empty space in your heart that only God himself may fill for any one person to be happy. Angus Buchan was born into Southern Rhodesia‚ which is now modern day Zimbabwe. He grows up as a Christian and is slowly drawn away from Christ as
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Determining the Solute Concentration of a Potato Aim: In this investigation I am going to work out the sugar concentration of a potato. I aim to find this out by putting potato cores into various concentrations‚ measuring the mass before and after. Due to osmosis the potato cores will change in mass to make the concentrations at an isotonic level‚ helping us to work out the mass of the potato. I predict that potato in the weaker solutions will gain mass‚ because some water will be absorbed by the
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efficient for transporting a variety of substance around the body. Ventilation: gaseous exchange is also a very important for exchanging materials. Oxygen and carbon dioxide are able to move easily between the lungs and the blood by diffusion. Gas and solute exchange surfaces in humans have been adapted to maximise their effectiveness. The larger an organism gets and the more complicated it is which makes it harder for materials to be exchanged. Gaseous exchange is the process by which oxygen is taken
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amount of solute affect the time it takes for the solute to dissolve?” I thought about this question for a very long time and come up with a hypothesis for the investigation was “If the amount of solute increases‚ then the time for the solute to dissolve will increase. This is because the solute will become more concentrated and it won’t disolve into the solvent as fast. (Sadner‚ 2008)” Looking at the data I collected‚ I think that this hypothesis was accepted‚ because the more solute added‚ the
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the solubility of solutes in variates of solvents and helped us to determine the polarity of the unknown solute. In this lab‚ we observed the effects of adding polar liquid solutes to non-polar liquid solvents. Materials used: Safety goggles 3 graduated cylinders ethanol‚C2H5OH solid iodine‚ I2 glycerol‚ C3H5(OH)3 water 10 rubber stoppers 10 test tubes kerosene ammonium chloride‚NH4CL an unknown solute The polarity of a solute or solvent which
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