is the diffusion of water across a selectively permeable membrane (Bell et al 2004). Osmosis is the movement of water molecules from an area of high concentration to an area of low concentration (Brown 1999). Hypertonic is the solution with a higher salt concentration. Hypotonic solution is the solution with the lower salt concentration. My hypothesis is that the potato core will increase in size. When the solution is hypertonic‚ the potato will decrease in size making the potato hypotonic. Osmosis
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MGH Evoked Potential Normative Values Pattern Shift Visual Evoked Potentials P 100 Latency (msec) Inter-eye difference (msec) P 100 Amplitude (µV) P 100 Amplitude % difference Mean 102.3 1.3 10.1 85.5% SD 5.1 2 4.2 10.50% Mean + 3 SD 117.6 7.3 N/A Notes (Smallest/Largest) 53.9% X 100 Brainstem Auditory Evoked Potentials Latencies (msec) I II III IV V VI Inter-wave latencies (msec) I-III I-V III-IV III-V IV-V V-VI Mean 1.7 2.8 3.9 5.1 5.7 7.3 SD 0.15 0.17 0.19 0.24
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examples of work done=force x distance What is work? Work in physics is the transfer of energy; work is done on an object when an applied force moves it through a distance. The link between work and energy is work done equals energy transferred. The units for the two are also the same (joules). E.g. 500J of work = 500J of kinetic energy. Work is calculated with the formula: work done=force x distance moved For example‚ if a force of 10 newton (F = 10 N) acts along point that travels 2 meters
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Osmosis is the diffusion of water molecules from an area of high concentration of sucrose solution to an area of lower concentration of sucrose solution‚ through a selectively permeable membrane. The water molecules move down a concentration gradient in osmosis. Two diagrams of osmosis are shown in figures 1 and 2. Figure 1 shows the diffusion of water molecules through a selectively permeable membrane from an area of highly concentrated sucrose solution to an area of lower concentrated sucrose solution
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answers.com/Q/What_enzyme_is_present_in_liver_and_potatoes#slide2 What Is the Optimum PH for Catalase - Ask.com. (n.d.). Retrieved October 29‚ 2013‚ from http://www.ask.com/question/what-is-the-optimum-ph-for-catalase What is the optimum PH for potato catalase and why? - Yahoo! Answers. (n.d.). Retrieved October 29‚ 2013‚ from http://answers.yahoo.com/question/index?qid=20071201155345AADgypg Retrieved October 29‚ 2013‚ from http://www.fmcchemicals.com/Portals/chem/content/docs/engineering/Properties%20of%20Hydrogen%20Peroxide
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Distilled Water 0.8 1.0 125% 0.4% NaCl 0.5 0.8 160% 0.9% NaCl 0.6 0.8 133% 5% NaCl 0.6 0.5 83% 10% NaCl 0.6 0.5 83% 8. The cells in the solutions of distilled water‚ 0.4% NaCl‚ and 0.9% NaCl would all appear to be inflated and could burst. This is due to the fact that the solution is hypotonic to the potato‚ thus water is entering the cell. Meanwhile‚ the cells in the solutions 5% NaCl and 10% NaCl would have shriveled cells. This is because the solution is hypertonic and water is leaving
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EXPERIMENT: TESTING OSMOSIS WITH A POTATO |LAB DATE: NOV. 23rd / 2012 | |CLASS: Y-11-C |PERIOD:C | OBJECTIVE The weight of the potato slices will increase‚ decrease‚ or remain the same? HYPOTHESIS There will be no net movement of water molecules into or out of the potato. MATERIALS LIST |Large potato
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Conclusion 1: In this first lab we attempted to discover which of the materials given to us were hydrates by heating them and then dissolving them in water. Our results showed that all of our substances were hydrates besides the sucrose‚ sucrose if the only one which did not both bring condensation when heated and dissolve in water‚ which agreed with our hypothesis because we also thought that sucrose was going to be the only one that wasn’t a hydrate. The only error that we may have encountered
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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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promote society’s values. Important social skills needed in the work force and everyday life are learned at school‚ such as sharing‚ compromise‚ and the importance of teamwork. As a student‚ I want to encourage and help children to reach their full potential. I want students to realize that they are all different‚ and understand that diversity is a good thing. I believe that there are different types of intelligence‚ and creativity is just as important as logic. Teachers’ behavior should reflect values
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