Michelle Yeung Bio 101 Cyrus MacFoy June 16‚2015 Diffusion and Osmosis Exercise I. Molecules are always in constant movement. Molecular motion is a form of energy‚ the kinetic energy of molecules. The Brownian movement is the movement of small particles caused by the bombardment of the particles by millions of water molecule. This movement will continue indefinitely as long as there is water. My prediction for this lab is the solution of the water is hypertonic meaning there is a higher concentration
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to Begin: the Chicken or the Egg? White‚ round‚ smooth are picturesque descriptions of an egg. An egg has a simple exterior that is easy to describe. However‚ this simple egg has a complex ecological footprint that contributes to the destruction of our planet‚ people‚ and prosperity. Eggs are essential to every dimension of the earth. An egg is a nutritious source protein and vitamins‚ triggering the performance of health maintenance in humans. Not only are eggs an exceptional source of nutrients
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1. Diffusion and Osmosis‚ June 4‚ 2013 2. Purpose: The purpose of this lab is to help give visual understanding of diffusion which is a solution of high concentration spontaneously (no energy required) moving to an area of low concentration. Also taking a look at osmosis‚ which is the movement of chemicals across the cell membrane. Osmosis requires some type of energy to be put in for this to happen. After these experiments we should have a better idea and visualization of how chemicals transfer
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that are selectively permeable. In other words‚ they allow certain things in and certain substances are not allowed to enter the inside of the cell. Osmosis is the process of water movement across the membranes from an area of high water concentration to an area of low water concentration to reach a sense of equilibrium. Diffusion is what enables osmosis to occur.
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are in an area‚ the more collisions there will be. These collisions cause molecules to push away from each other. So‚ over time‚ the molecules of a substance will continue to spread out. Eventually‚ they will be spread evenly throughout the area. Osmosis is the diffusion of water. (when “the substance” that is diffusing is water)
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the beaker turned orange because of osmosis which attests to glucose leaving the bag. Iodine Potassium Iodine and water entered the bag. This was proven by the color change in the starch test as the bag turned black also because of osmosis. The only thing that the hypothesis lacked was that starch did not move at all. The beaker stayed yellow before and after because the bag is not permeable to starch. 4B- The hypothesis was supported because the diffusion rate was faster shown from the agar blocks
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Diffusion and Osmosis NGSSS: SC.912.L.14.2 Relate structure to function for the components of plant and animal cells. Explain the role of cell membranes as a highly selective barrier (passive and active transport). SC.912.L.14.3 Compare and contrast the general structures of plant and animal cells. Compare and contrast the general structures of prokaryotic and eukaryotic cells. AA Background: (Source: www.explorelearning.com) Diffusion is the process in which there is a net movement of
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some pancakes.” Maria said‚ handing me a plate of food. I smiled and said my thank yous when my father‚ Des‚ came into the room. “Maria‚” he gave her a tight nod and smiled‚ “Hey kiddos! How are ya?” “Good‚” Cole said‚ with a mouth full of food. I giggled and said‚ “C’mon kid‚ let’s go take you to school.” while patting his back. A knock sounded at the door and Maria went to go answer it. “Miss Darcy‚ there is someone at the door for you. Shall I let them in?” she sounded through the doorway
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Diffusion and Osmosis Lab Introduction • What molecules can pass through a semi-permeable membrane? In this lab study we tested carbohydrates such as starch and glucose‚ as well as solutions like Benedict’s and Lugol’s to see if they would cross the membrane of a cell but since we can’t actually see that happen we used dialysis tubing (acts as the cell membrane). • My prediction was that glucose and Benedict’s could pass the semi-permeable membrane but starch and Lugol’s wouldn’t be able to
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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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