Lab Topic: Movement of Materials Across the Cell Membrane—Potato Tuber Cells Introduction: Osmosis is a form of diffusion in which water diffuses through a selectively permeable membrane from a region of high concentration to a region of lower concentration. This form of diffusion takes place when the molecules in high concentration are too large to move through the membrane. Three factors that determine cell membrane permeability are shape‚ size‚ and polarity. For this experiment‚ it must
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Investigating the Water Potential Of Potato Cells Aims 1. To test how water potential‚ in a solution‚ affects the movement of water in and out of a cell by osmosis Prediction I predict that by increasing the water potential around the outside of the potato cell‚ (i.e. so that the water potential is greater outside the cell compared to the inside of the cell e.g. 0m sucrose) that the net movement of water into the cell will increase. This is due to the water potential being greater outside the cell
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The relatively close pH levels of Tap Water‚ Spring Water‚ Flavored Water‚ and Seltzer Water. Introduction This experiment was performed to investigate the following hypothesis: The following four different types of drinking water (spring water‚ seltzer water‚ tap water‚ and flavored water) we test will relatively have the same pH level. Our group decided to test different types of drinking water to see if a pH level of tap water is comparable to other types of water. Many people believe
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experiment‚ you will study osmosis. Your task is to design an experiment that will determine what concentration of solute is isotonic with the specimen cells. (Design) Procedure: You will be provided with the following materials: Potato‚ potato corer‚ scalpel‚ forceps‚ electronic balance 10 % salt solution‚ distilled water‚ 50 mL beakers‚ graduated cylinder‚ paper towel You must design a procedure that will enable you to determine the concentration of salt that is isotonic
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Republic Act No. 9344 AN ACT ESTABLISHING A COMPREHENSIVE JUVENILE JUSTICE AND WELFARE SYSTEM‚ CREATING THE JUVENILE JUSTICE AND WELFARE COUNCIL UNDER THE DEPARTMENT OF JUSTICE‚ APPROPRIATING FUNDS THEREFOR AND FOR OTHER PURPOSES Be it enacted by the Senate and House of Representatives of the Philippines in Congress assembled: TITLE I GOVERNING PRINCIPLES CHAPTER 1 TITLE‚ POLICY AND DEFINITION OF TERMS Section 1. Short Title and Scope. - This Act shall be known as the "Juvenile
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Abstract The experiment was carried out to investigate at which point the potato has reached its isotonic environment. From the results‚ when the concentration increase to 0.3M‚ the mass of the potato slices decreased by -3.26%. We can conclude we see that as we increased the sucrose concentration it was a decrease in the percent change. Introduction All cells have membranes that are selectively permeable. In other words‚ they allow certain things in and certain substances are not allowed to
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a range of temperature correlating to the volume of Pink Lady’s red apple juice to indicate enzymatic performance of pectinase to ensure reliability and allow scope for statistical evaluation. The trend is similar to the curve as seen in Figure 2 and it can be concluded that the trend is confirmed by the data collated. However‚ 5 trials are not sufficient enough to depict the rest of the results to accurately indicate the actual performance of pectinase in Pink Lady’s red apple juice extract. To
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The problem that we are solving is “How does the temperature outside affect the speed and heart rate of the runner?” We chose this to investigate “How does the temperature outside affect the speed and heart rate of the runner?” because we both play sports that require lots of running (Track and Field and Soccer.) Therefore‚ when running track outdoors the weather at the beginning of the meet may be colder‚ than the end when it’s most likely hotter. As well as a soccer tournament‚ you may play a tournament
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organisation is accurate and efficient and delivered in a timely and cost effective manner and that the human resource data is managed professionally. The behaviours describe in detail how a human resources professional needs to carry out their activities. Each behaviour is described at four bands of professional competence. There are eight behaviours which I have listed below:- 1. Curious – Is future focused‚ inquisitive and open minded; seeks out evolving and innovative ways to add value
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Abstract This experiment was designed to answer the question does temperature affect the amount of osmosis? The hypothesis predicted was that the higher the temperature the more osmosis would occur‚ but too high the osmosis would halt due to enzyme and substrate overheating and losing shape. After research and class time it was concluded that osmosis is a passive transport and would not require energy or enzymes due to it going from high to low concentrations with the gradient
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