3. Explain the similarities and differences between diffusion and osmosis. Both are the movement of a substance from an area of high concentration to an area of low concentration. But osmosis is the movement of water through a cell membrane. 4. Define Turgor pressure ( also known as osmotic pressure). The pressure that would have to be applied to a pure solvent to prevent it from passing into a given solution by osmosis‚ often used to express the concentration of the solution 5. What
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of this can be observed by opening a bottle of perfume. Soon you will smell the perfume in distant parts of the room. It diffuses from the high concentration of molecules in the bottle to a lower concentration of molecules in the air. Osmosis is a type of diffusion. It involves movement of water through a differentially permeable membrane from a region of high concentration (of water molecules) to a region of lower concentration (of water molecules). We define 3 types of solutions
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Abstract I found that this experiment gives me an understanding on how osmosis and diffusion works. In its simplicity‚ it explains the process that our bodies (mainly cells) use all the time. It also showed me that even with the temperature changing‚ it doesn’t drastically change the rate of diffusion. Introduction Diffusion is important in all living systems. Osmosis is the passage of water from a region of high water concentration through a semi-permeable membrane to a region of low water
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"Do different concentrations of solutions determine the mass of a potato?" Introduction: The way to get the full results of this lab was through the process of osmosis. Osmosis is the movement of water across a membrane into a more concentrated solution to reach an equilibrium. When regarding cells osmosis has three different terms that are used to describe their concentration. The first of these words is isotonic. Cells in an isotonic solution show that the water has no net movement and the amount
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life functions F. Homeostasis - The tendency of living organisms to control or regulate changes in their internal environment G. Diffusion - The movement of molecules from an area of high concentration to an area of low concentration H. Osmosis - The diffusion of water across a selectively permeable membrane I. Osmoconformer - An organism that allows its internal concentration of salts to change in order to match the external concentration of salts in the surrounding water J. Osmoregulator
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solution from another by osmosis. The higher the osmotic pressure of a solution‚ the more water tends to move into it. Pressure must be exerted on the hypertonic side of a selectively permeable membrane to prevent diffusion of water by osmosis from the side containing pure water. Osmotic concentration refers to the measure of solute concentration‚ defined as the number of osmoles of solute per litre of solution. These particles must be osmotically active for the process of osmosis to take place. Keeping
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3 1. The pressure will increase due to the increased concentration of sodium chloride. The pressure increased. 2. Neither one requires ATP. Simple diffusion is the movement of a solute from an area of HIGH to LOW solute concentration but osmosis is the movement of water from an area of LOW to High solute concentration. 3. Because water moves toward the HIGH concentration of solutes. 4. We know the pressure will increase in the albumin beaker because it is more impermeable than glucose
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molecular weight is‚ the faster the diffusion gets. The Starch did not pass through the membrane because it is composed of Polysaccharide made up of many Glucose molecules‚ which makes it heavier than one single Glucose molecule to pass through. Osmosis: We took three piece of potato and placed them in three beakers with the same quantity of water but with different concentrations‚ results are: Solution Result 0.9% NaClNothing happens H2O Hypotonic : Potato Swells 30% NaClHypertonic: Potato
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Lab Activity No. __ Diffusion and Osmosis I. Introduction Diffusion is the transfer of molecules (or ions) from an area of higher concentration to a lower concentration‚ while osmosis is the transfer of water from a higher concentration to a lower concentration. II. Objectives 1. Demonstrate diffusion and osmosis across membrane. 2. Examine the relation of membrane permeability to diffusion and osmosis. III. Materials 2 thistle tubes‚ 2 big beakers‚ 4 tube clamps to fit iron stands
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Initial mass (kg) Final mass (kg) Change in mass (%) 0.10 0.95 1.25 31.57 0.20 0.94 1.13 20.21 0.30 1.03 1.15 11.65 0.40 0.95 1.05 10.52 0.50 0.88 0.86 -2.27 0.60 0.93 0.84 -9.67 Control 0.99 1.40 42.41 Discussion. Osmosis is the passive diffusion of water molecules across a selectively permeable membrane from a down a concentration gradient. The water potential of a system is the tendency for water to exit the system. In this experiment the aim was to measure the
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