Lab # 2 Diffusion & Osmosis Introduction Kinetic energy‚ a root of energy stored in cells‚ causes molecules to hit into each other and move in new directions. Diffusion is the result of this contact. Diffusion is the random movement of molecules to an area of lower concentration from an area of higher concentration. Osmosis is a type of diffusion. This is the diffusion of water through a selectively permeable membrane from a region of higher water potential to a region of lower water
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Figure 1 shows the average amount of absorbance for each tube‚ containing different levels of pH. Tube 2 had an acidic pH level‚ Tube 3 had a neutral pH level‚ and Tube 4 had a basic pH level. It is indicated that the absorbance rates were the highest for the neutral pH level‚ with a final absorbance rate of 0.166. This was followed by a basic pH (0.106). The acidic pH level had the least amount of absorbance with a final absorbance rate of 0.069. This reinforces the idea that the ALP enzyme worked
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Rate of Osmosis Investigation Lab Title: A simple heading referring to your investigation Abstract: Write this section last! It is a brief paragraph or 2 which outlines the purpose‚ the method‚ the pattern of results and the conclusion you reached. It is an overall snapshot of the whole investigation. Introduction: Purpose: Biological Background: All living organisms are made of cells which are surrounded by a membrane. The cell membrane has many functions but the
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water will move from the solution into the cell and cause the cell to burst (1). A cell in an isotonic solution neither swells nor shrinks because there is no concentration gradient for water across the cell membrane (1) The objective of this experiment is to find out the effect distilled water‚ 3% sodium chloride solution and 5% sodium chloride solution have on onion epidermal cells. From the above literature‚ its hypothesised that the cells in distilled water should maintain their shape‚ cells
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OSMOSIS ASSESSMENT TASK Introduction Osmosis is the net movement of water particles from an area where they are in high concentration to an area of low concentration‚ down a concentration gradient. Hypothesis: Will a high concentration of salt solution affect the mass of a potato chip? Variables Controlled variables: -The sizes of the potato chips. Bigger size of potato chips will weigh heavier and the smaller potato chips will weigh lighter‚ if we don’t use the same size of potato chips
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Question 1: How does Osmosis works It refers to the movement of water molecules from an area of high-level water concentration‚ that is‚ a dilute solution‚ to an area of low-level water concentration‚ that is‚ a strong solution through a semi-permeable membrane. (Passmyexams.co.uk‚ 2015) Actually‚ water moves in a bi-directional manner with the aim of leveling up the concentration. However‚ a high number of water molecules move from the fresh water towards the salty water. The outcome
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Subway and The Tube Train George Tooker‚ an American artist painted “Subway” in 1950. Cyril E. Power‚ a British artist‚ created “The Tube Train” in 1934. With a quick glimpse of the eye‚ one may think these two pieces of artwork are similar. After all‚ a subway and a tube train are basically the same thing. To a trained eye‚ one can see the many differences in the two pieces. Tooker was associated with the Magic Realism movements‚ and is best known for his depictions of alienation in modern
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while the other two potatoes remained firm. There was also an awful odor that only came from the potato in the tap water. Conclusion: The hypothesis was correct. The 40% salt solution killed the sailor. This solution was hypertonic which causes osmosis to move the water out of the cell. The sailor then became too dehydrated and died. Salt absorbs water‚ which is why drinking salt water is not good for
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Effect of Sucrose Solution on Osmosis Aim: The aim of the experiment is to show how varying the concentration of sucrose solution affects osmosis by changing different molar solutions of sucrose and water and how it affects the potato. Introduction: In this investigation I will be exploring the effect of varying concentration of sucrose sugar solution on the amount of activity between the solution and the potatoes. Osmosis is the movement of water molecules across a partially
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Introduction The movement of molecules from an area of greater concentration to an area of less concentration is called Diffusion. Osmosis is the diffusion of water through a selectively permeable membrane from an area with greater concentration of water to an area with less concentration. A Hypertonic Solution is a solution of a higher concentration of solutes and a smaller concentration of water molecules than another solution. However‚ an Isotonic Solution is a solution that contains an equal
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