min intervals of each concentration. The first tube showed very little weight change. However all other tubes show a greater change the concentration could be the factor that determines the permeability of the sucrose. The sucrose molecules are too large to pass through. Figure 1b- sucrose concentration determines the weight change. In this case based on our results as concentration increases the percent weight change is decreasing. Discussion: The purpose of this lab was to observe and analyze
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solution (distilled water‚ 0.2 M sucrose‚ 0.4 M sucrose‚ 0.6 M sucrose‚ 0.8 M sucrose‚ and 1.0 M sucrose) into separate bags. Tie the other end of the bag‚ leaving sufficient space for expansion. Record the initial mass for each bag in grams. Then‚ fill the cups with distilled water. Place each bag in one cup and label each cup with each solution. After 30 minutes‚ remove the bags from the water. Finally‚ record each bag
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contain aspirin‚ acetaminophen‚ and sucrose; therefore‚ the tablets tested‚ containing aspirin and sucrose‚ are thought to contain an unknown of something similar to that of acetaminophen such as acetanilide or phenacetin. Another problem trying to be sought out in the experiments is whether or not the composition of Panacetin as stated on the label is accurate. The experiment involved the separation of the unknown from the Panacetin by first isolating the sucrose and the aspirin. This process was
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permeable membrane. An osmotic system is established when a semi-permeable membrane is placed between two solutions. In this biological systems context‚ osmosis is the exchange of water between the potato cell and the surrounding medium of varying sucrose concentrated solutions‚ with the plasma membrane being the semi- permeable membrane. Because water molecules have kinetic energy‚ they are constantly moving around in gaseous or liquid form‚ moving randomly from one place or another. The greater the
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to reach equilibrium. Step 2: My hypothesis was that the bag with 60% sucrose then it would be heavier than the bag with tap water or 30% sucrose. I thought this because I thought that there would be more of a substance change in 60% sucrose. Section 3: Methods First get 3 pieces of the same length of tubing then get 6 pieces of string. Fold one half of the tube over and tie the end with string. Then add 5 ml of 30% sucrose solution in the tubes. Squeeze the bag gently to release air fold it over
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We will investigate how the mass of the potato chips change in different sucrose solution concentrations. We will use osmosis to do this. I will be measuring and controlling many different variables‚ these include; - The dependent Variable Weight of potato chip Independent Variable Concentration of sucrose Control Variables consist of; - 1. Temperature 2. Surface area of potato 3. Volume of sucrose solution 4. Same time for each potato chip submerged in solution 5. Potato
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Exploration Research Question What is the effect of different concentrations of sucrose in a solution on the mass and surface area of a beetroot (Beta Vulgaris) piece? Background The membrane consists of a phospholipid bilayer which is semi permeable. Osmosis is the passive movement of water molecules from an area of high water potential to an area of low water potential across a semi-permeable membrane. It is easy for water molecules to pass through this membrane however solutes that are big in
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are full of sucrose used for energy storage in plants. Sucrose is a carbohydrate found in food. It is a disaccharide‚ with a combination of fructose and glucose. Consumers break sucrose down into two monosaccharides so they can be absorbed more easily into the blood. Sucrose is too large of a molecule to diffuse through a semi-permeable membrane‚ and therefore needing to be broken down so they can move in and out of cells effectively. If potatoes are placed in a solute containing sucrose‚ then a concentration
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Production of Yeast in Different Sucrose Solutions Internal Assessment Azayleah Delgado October 27‚ 2013 Period 2 Carbon Dioxide Production of Yeast in Different Sucrose Concentrations Raw Data Tables: Sucrose concentration (%) Volume of CO2 captured (mL) 0 minutes 5 minutes 10 minutes 0 4.5 4.5 5.0 2.5 4.0 4.5 4.5 5 4.0 4.0 4.5 7.5 4.0 4.5 4.5 10 3 3.5 3.5 Table 1: Trail 1 of Volume of CO2 captured by sucrose concentration Sucrose concentration (%) Volume
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Lab: Cellular Respiration in Yeast Lab Report Form Your Name: “What do you think? – What do you know?” Questions: In this lab‚ we will investigate the effect of sucrose concentration on the rate of cellular respiration in yeast. Under specific conditions‚ yeast will convert sucrose into glucose and then use this glucose in cellular respiration. 1. Yeasts have been used by humans in the development of civilization for millennia. What is yeast? How have humans used yeasts? They are most
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