Martina Oganesyan Title of investigation: The effect of solute concentration on osmosis in potatoes. Research question: What is the solute concentration of a potato? Hypothesis: Osmosis is the movement of water across the membrane from an area of high concentration to an area of low concentration. The osmosis continues until the solute concentrations are equal in both areas. In this experiment‚ we put pieces of potatoes into test tubes with sugar solutions of different concentrations and leave
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THE EFFECT OF CHEMICALS AND TEMPERATURE ON MEMBRANE DESTRUCTION AND PERMEABILITY IN BEETROOT (Beta vulgaris) Introduction The cell membrane is made up primarily of phospholipids and proteins which contribute to its selectively permeable nature. The function and permeability of the cell membrane depends on its intact structure. When destroyed‚ the permeability of the cell membrane is disrupted causing cellular contents to leak out. The cell membrane can be destroyed by physical damage‚ chemicals
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They are found integrated into the plasma membrane. C) They assist in simple diffusion. D) They might have to change shape slightly to accommodate a solute. 4) Osmotic pressure is measured in units of _______. 4) _______ A) mm Hg B) ml/min C) mM/sec D) mM/min 5) Which of the following is NOT a passive process? 5) _______ A) osmosis B) facilitated diffusion C)
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Measuring the Standard of Living Economists want to be able to make statements that compare the standard of living between different countries or between different time periods. This is quite tricky. As we have just observed‚ people enjoy a very different mix of products and services at different points in time. In fact‚ a likely reason that DeLong seized on the example of flour is that flour is one of the few products that we buy today that we can picture being purchased 500 years ago. Economists
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Although that I have learned the system of letting students moving across classrooms for class long before‚ I realized its problem only after attending school as an international student. As I have often heard‚ there is a prevalent that letting students moving across classrooms for different classes teaches the student to be organized and provides the students more chances to make their own course selections. However‚ in my opinion‚ due to its ineffectiveness and risks‚ the drawback of such system
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Introduction: The objective of this experiment is to demonstrate osmosis by using an egg as a model. In order for this to happen the vinegar will make the eggs shell disappears. The reason for this is because vinegar has acetic acid and the shell has calcium carbonate‚ when these come into contact it produces carbon dioxide. This is the reasoning for the little bubbles when the egg is first put into the vinegar. After the shell discinigrates it will become rubbery from the acetic acid‚ at this
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Business Across Culture Week 3 Learning Journal Hospitality Across Culture Hospitality is the relationship between guest and host‚ or the act or practice of being hospitable. When coming to another country‚ we always want to make a good impression to the native people like showing them our hospitality. But sometimes‚ because of different culture our hospitality is considered as offence.So what should we do in this case? In case study‚ a typical situation
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Laboratory Report on Urine Examination Introduction: When testing urine the test results may provide information regarding the status of carbohydrate metabolism and kidney function. The kidney glomeruli act as ultrafilters for the plasma protein; however as much as 150 mg/dl of protein may normally be excreted into the urine. In glomerular proteinuria‚ an increase in glomerular permeability occurs‚ resulting in an increase of urine proteins. High urine protein concentration therefore may indicate
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From Slavery to Captivity & The Cultural Difference. Aaron McCaffity African American History Dr. Ozomeyo April 25‚2012 Slavery has existed throughout many cultures in various forms during history. Slavery is the system of capturing individuals against their will or voluntarily and treating such as property by selling or purchasing to the same time as agriculture because agriculture relied on the domestication of the animal species to transport
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The Slave Across the Street Introduction The Slave Across the Street‚ written by Theresa Flores and published by Ampelon Publishing in 2010‚ tells the story of the authors struggles as young trafficking victim in her suburban town. The title of the book connotes a close proximity between a possible slave and the reader; and in fact the story demonstrates how close anyone can be to a victim of trafficking—even in place everyone would consider safe. The table of connects effectively breaks down
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