Abstract: Water potential is the measure of free energy of water in a solution. The purpose of this lab was to find the water potential of a potato cell. The problem of this lab was‚ if there was a high molarity of solute‚ would it have a positive or negative water potential? The hypothesis of the experiment was‚ if there is a high molarity of solute then the water potential would be lower or negative. After obtaining potatoes‚ we cut them into pieces‚ weighed them‚ and then placed them in a solution
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Osmosis Osmosis is just a special case of diffusion - where water diffuses through a membrane which has different concentrations on either side. Permeable means "allows anything to pass through". Membranes in cells allow small molecules (water) to pass through‚ but prevent bigger ones from passing. This is called "selectively permeable". Take a look at the following animation; If a selectively permeable membrane separates the two solutions‚ water moves through it in both directions at
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Water is one of the many things that all human being need in order to survive. Considering the vast amount of water that is on the planet‚ it is reasonable to believe that there is more than enough water for everyone to have their fair share and more. Yet this sadly is not the case‚ as the majority of the water on Earth is unsuitable to drink due to the fact that it is tainted with a numerous amount of contaminants‚ such as bacteria and salt. The amount of safe drinking water is decreasing more
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Aim: What is the effect of changes in sucrose concentrations on the water potential of potato cells? Raw Data: Suscrose concentration (0.00M) Group 1 Group 2 Group 3 Group 4 Change in mass (g) (+/-0.1g) 0.04 0.19 0.10 -0.27 Change in length (mm) (+/- 0.1mm) 0.00 0.00 0.00 0.30 Suscrose concentration (0.10M) Group 1 Group 2 Group 3 Group 4 Change in mass (g) (+/-0.1g) 0.29 0.44 0.22 0.08 Change in length (mm) (+/- 0.1mm) 1.10 0.30 0.30 0.70
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eInvestigating water potential of swede The aim of our experiment was to investigate the water potential of swede and then use our results to help us determine the water potential of plant tissue. This overall flow of water from a dilute area of high water potential to a more concentrated solution of low water potential across a partially permeable membrane is called osmosis. I predicted that the swede cylinders which are put in a test tube with a low potential of sucrose solution would become
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Investigating the water potential of a potato Aim Osmosis is the movement of water molecules from a region of high water concentration to a low water concentration through a semi-permeable membrane. Our aim is to investigate the water potential of a potato through osmosis‚ by finding the difference in weight before and after the potato has been set in a solution of water‚ sugar or salt. Trial Method Firstly we collected the equipment. This included a scalpel‚ potato cutter‚ and test tubes. Then
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Structural Engineer For my research I chose to look into Commercial water systems it’s fascinating to see a pressurized system of water for a facility such as a large hospital. I interviewed a friend who was involved in engineering the system to be installed in a hospital and there’s a lot more to it than I first expected‚ I never really thought of how complicated it actually was and how much water that involved. Most companies involved in these commercial jobs are larger companies
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China background informations - Area: 9‚596‚961 sq. km - Population (July‚ 2010): 1‚330‚141‚295. Annual growth rate: 0.494 % - Ethnic groups: Han Chinese is 91.5%‚ ethnic minority and other nationalities are 8.5%. - Religions: Officially atheist‚ Daoist (Taoist)‚ Buddhist‚ Christian is about 3%-4%‚ Muslim is approximately 1%-2%. - Languages: Mandarin is also called Putonghua is the main language in China‚ plus many local dialects. - Government: Communist party-led state. - GDP is $4.814 trillion
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Time Period: Enlightenment: 18th century France and England A.K.A. the age of reason climate of inquiry Lessening Control of the Church The Protestant Reformation- Martin Luther The Printing Press Scientific Developments The New World (America!) Philosophies of the Time Rationalism: Rene Descartes (math)- humans‚ by reason alone‚ can discover universal truths Sir Isaac Newton- Mechanical science. All truth found in nature‚ rejection of supernatural religion. Emphasis is placed on
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Investigation of Water Potential in a Root Vegetable Introduction Background Information: Osmosis is the passage of water from a region of high water potential to a region of low water potential‚ down a water potential gradient through a semi-permeable membrane. If a plant cell‚ or an item with similar properties is put in water‚ three different things can happen: • If the surrounding area has a higher water potential‚ the cell will increase in mass through osmosis. The cell will
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