Introduction: The purpose of experiment 1 was to demonstrate the principle of simple diffusion and understand how to make % solutions. Exercise 2 demonstrated the principle of osmosis: observing the movement of water by osmosis from an area of lower concentration of a solute to an area of higher concentration of a solute. Materials and Method: Refer to pages 47-51 of Bio 203L Lab Manual. Results/ Discussion: The effect of the chloride ion on its rate of diffusion in agar means it will diffuse
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6th period 2/12/15 Gummy Bear Osmosis Lab Report Purpose: The purpose of this lab is to measure the amount of Osmosis in different types of solutions and to see how a cell would react in different types of solutions. Hypothesis: My hypothesis for this experiment is that the Gummy bear will absorb more of the plain tap and sugar water and the salt water will shrink the gummy Procedure: Materials- 3 clear cups‚ one spoon‚ 3 gummy bears‚ timer‚ tap water‚ salt‚ sugar‚ ruler‚ and beaker Fill one cup
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As discussed in the intro‚ the purpose of this lab is to observe principles of homeostasis and osmosis in action. The results of this experiment showed that eggs placed in a 4 M sucrose solution lost mass over time and had the greatest percent difference in mass compared to the eggs in other solutions‚ with the 4 M egg having an average of -25.13% difference in mass. The 0.0 M solution egg only had a 12.28 average percent difference in mass‚ the 0.5 M egg with 10.39%‚ and the 1 M egg with the least
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Sugar Cane Diffusion The advantages of diffusion The advantages of diffusion over conventional milling have been confimed by the performances of DE SMET diffusers in industrial operation. De Smet diffusers have processed several million tons of cane in different countries and proved their : √ √ √ √ √ √ Simplicity Efficiency Low maintenance costs Low operation costs Mechanical reliability Adaptation to changes in capacity. Types of De Smet diffusers De Smet supplies two types of diffusers : √
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Investigating the Osmosis Effect in Potato Cores Aim The aim of this experiment is to investigate the osmosis effect in potato cores while they are submerged in different concentrations of sucrose solution. Osmosis will take place while the potatoes are fully submerged in the sucrose solution. Apparatus æ Scalpel (1) æ Tile (1) æ Pr. Tweezers (1) æ 250ml Beakers (2) æ 100ml Water (Per Beaker) æ 100ml Sucrose Solution o 0.2M o 0.4M o 0.6M o 0.8M o 1.0M æ Measuring
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influence my view of life and encourage me to respond to certain issues in a particular way. No Sugar‚ an Australian play written by Jack Davis‚ an Aboriginal Australian‚ challenged my values towards Aboriginals and issues such as the treatment of our indigenous people today and between the years 1929-34. I was encouraged to respond to Aboriginal people in a positive way. Jack Davis in his play No Sugar highlights the appalling conditions in which Aboriginals lived throughout the depression ("Haven’t
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Addition of Extra Sugar Affects the Growth of Plants Lacey Fish Florence Nguyen Danielle Wang Julia Wu Botany 10MWF April 4‚ 2006 Materials: 1. 20 Mung beans 2. 4 plastic cups 3. soil 4. Turbino sugar 5. Distilled water 6. Beakers 7. Graduated cylinders 8. Stir plate 9. Scale 10. String 11. Ruler with cm measurements 12. Stir bar Background: We chose this project because we were curious to see how the amount of raw sugar in the soil
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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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Osmosis/Plasmolysis Lab Name: Problem: How do solutions of various salt concentrations influence osmosis in relation to an onion cell? Materials: (per student group): red onion epidermis forceps‚ dropper distilled water NaCl solution paper towels microscope slide cover slip Procedure 1. Make a wet mount of the red onion epidermis. 2. Examine under low power. When you have a clear view of several cells‚ switch to high power. Make a labeled drawing
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Egg Osmosis Lab The purpose of this lab was to demonstrate an example of a spontaneous reaction and its connection to metabolism; in this case it was osmosis. The procedures that we used to complete the experiment were taking five eggs that had been soaked in a sucrose solution and then placing each one in containers of sucrose that each had different levels of concentration. The mass of each egg was measured before being placed into the solutions and then every 10 minutes after until they had soaked
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