cell‚ so the water molecules diffused out of the cell through the selectively permeable membrane. The higher the concentration‚ the more plasmolysed the cell becomes and my results show this. The 0M bathing solutions in both experiments caused the potato cells to become slightly turgid‚ this means that there was a higher concentration of solution on the inside of the cell. So the water molecules diffused into the cell through the selectively permeable membrane. The rate of water loss decreases as
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Potato Osmosis Introduction: A shipwrecked sailor is stranded on a small desert island with no fresh water to drink. They know they could last without food for up to a month‚ but if they didn’t have water to drink they will be dead within a week. Hoping to postpone the inevitable‚ their thirst drives them to drink the salty seawater. They are dead in two days. Why do you think drinking seawater killed the sailor faster than not drinking any water at all? Today we explore the cause of the sailor’s
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affect the rate of enzymes reactions. One of them is pH‚ which influence on the enzyme activity will be the subject of this investigation. Catalase of potato tuber cells will be the enzyme used in the experiment. RESEARCH QUESTIONWhat is the influence of different values of pH on the activity of catalase in potato tuber cells?VARIABLESIndependent: potato discs treatment (placing them into buffer solutions of different pH values‚ mixed with hydrogen peroxide)Dependent: the activity of the catalase‚ reflected
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experiment is to study how enzyme activity is affected by environmental conditions. Researchers tested the level of potato extract enzyme activity with 1-11 pH‚ varying temperature‚ catechol solution‚ hydroquinone solution‚ and different measurements of catechol. In Figure 1A and 1B‚ pH levels were tested with potato extract to see how pH would affect the amount of Benzoquinone is formed in the potato. Although it was hypothesized that enzymes would form Benzoquinone better in acidic pH levels‚ the absorbency
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Living a Salty Life‚ http://www.lucasbrouwers.nl/blog/2009/11/living-a-salty-life/‚ date viewed: 10/03/13 Osmosis and The Water Potential of a Potato‚ http://biology.clemson.edu/bpc/bp/lab/110/osmosis.htm‚ Robert. J. Koninski‚ last update: October 2012‚ date viewed: 04/03/13 Potato in Osmosis Core‚ http://biology.clemson.edu/bpc/bp/Lab/110/handouts/Potato%20Osmosis%20OMP.pdf‚ date viewed: 02/03/13
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Biology Hl lab report: Topic: Osmosis of potatoes in different sucrose solutions. The aim of this 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
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The Science of the Spud — a History of the Potato Battery Experiment There are hot potatoes‚ french fried potatoes‚ baked potatoes and scalloped potatoes. There are potato chips‚ potato pies and potato soufflés. Last‚ but not least‚ there’s the potato battery. Who on earth invented the electric spud? Why does it work? For that matter‚ why would anyone want to see if a potato could conduct electricity in the first place? Well‚ we may never be able to answer some of the questions this quirky experiment
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Supa-Long French fries. At the time‚ we all agreed this was great potential business for Fyna Foods‚ but that it also posed a major problem for us – what to do with the excess potato left over after we supply Beefies with the extra-length fries. Unfortunately‚ we still haven’t been able to come up with a perfectly square potato! To dump this excess material would mean almost certainly making a loss on the Supa-Long Fires business. I am very pleased to be able to report to you today; however‚ that my
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of salt concentration on potatoes. Scope In this investigation three square pieces of potato were placed into individual beakers containing different salt concentrations of 0%‚ 10% and 20% and observed for 120min. Hypothesis The theory behind this experiment was that the piece of potato placed into the 0% salt solution would increase in weight and size as it is a hypertonic solution. The pieces of potato placed into the 10% and 20% salt solution would theoretically decrease in weight and size
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occur by moving water through the semi-permeable membranes. If the concentration of sucrose in the solution is less than the concentration of sucrose found in the potato‚ then the potato would decrease in mass. The opposite would occur as well‚ if the concentration of sucrose in the solution is more than that of the potato‚ then the potato would expand and gain in mass. In conducting this as an
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