concentrations of sucrose on the mass of a potato cell. Results for Part One suggested that the molecular weight of albumin and starch was too large to pass through the dialysis tube‚ but glucose and sodium sulfate molecules were small enough to pass through the dialysis tube. Also‚ a decrease in water weight occurred due the dialysis tube being placed in a hypertonic solution. Results for Par Two showed the potato cell having a molar concentration of 0.2734‚ which caused sucrose concentrations above
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affect diffusion and osmosis. This report was written to explain and present the results gathered in a precise and organized manner. This experiment was divided into two parts. The first part concentrated on the placing potato cylinders in different sucrose concentrations for a period of time. This part was conducted to see if the potato cylinders would gain weight or lose weight because of osmosis. The second part was conducted to see if a dialysis bag‚ filled with sodium sulfate and starch solution
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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 for 30 minutes. The change in the mass of the eggs varied widely depending on the concentration of sucrose that they were placed in. The mass of the eggs placed in the 0%‚ 10%‚ and 20% sucrose solutions increased in mass between
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rate of osmosis was found by calculating the corrected cumulative change in weight. The prediction made was that the cells with the higher solute concentrations would have a higher rate of osmosis and the cell filled with water and placed in 40% sucrose solution would have the highest negative weight change. Introduction The
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it was their turn to use the balance. Then they determined the mass of the 4 cylinders together and recorded the mass. Jaydon‚ Jacob and Tyler took the sucrose solution and inputted is with the potatoes. Jaydon‚ Jacob and Tyler covered the beakers with plastic wrap to prevent evaporation. Then they let the potatoes stand overnight in the sucrose solution. Jaydon‚ Jacob and Tyler then removed the covers from the beakers the next day. Jaydon‚ Jacob and Tyler put the potatoes gently on paper towels
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form of Holzel’s entity. Congenital sucrose intolerance due to sucrose malabsorption was first reported in 1960 by Weijers et al. in three children‚ in one of whom maltose tolerance was also poor [27‚77]. Five patients with sucrose intolerance described by Prader et al. in 1961 [22] were later shown to have an additional intolerance to isomaltose and palatinose [23-251 which are split by the same enzyme [26]. A total of thirty-four cases of congenital sucrose intolerance have increased absorption
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Evaporation: Separating the Components of "Panacetin" Submitted- July 17‚ 2012 Introduction The purpose of this lab is to investigate the composition of a compound suspected to be Panacetin‚ a type of pain-killer. Panacetin is typically made up of sucrose‚ aspirin‚ and acetaminophen‚ but the third component in this experiment is unknown. The unknown component is suspected to be a chemical relative of acetaminophen‚ either acetanilide or phenacetin. Using techniques such as extraction‚ evaporation
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with increasing sucrose concentration Materials and Methods Effect of pH on Enzyme Activity Dependent Variable amount of product (glucose and fructose) produced Independent Variable pH Controlled Variables temperature‚ amount of substrate (sucrose) present‚ sucrase + sucrose incubation time Effect of Temperature on Enzyme Activity Dependent Variable amount of product (glucose and fructose) produced Independent Variable temperature Controlled Variables pH‚ amount of substrate (sucrose) present‚ sucrase
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view and examine the effect different concentrations of sucrose solution has on the movement of water across the cell membrane. Hypothesis: That the potatoes will either increase or decrease in mass‚ due to the effect of the different concentrations. Osmosis will occur. Apparatus: * Fresh potatoes * Apple corer * Scalpel * Petri dishes X 10 * 50ml measuring cylinder * Distilled water * Paper towelling * Sucrose solutions: * 1.0M * 0.8M * 0.6M * 0
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Aim/Reasearch Question: How can the rate of cellular respiration be measured to find out if sucrose‚ dextrose‚ lactose‚ or maltose lets the yeast to respire more than others. Hypothesis: I think‚ dextrose yeast solution will respire the most number of bubbles because it is the simplest sugar to break. Materials: * Knut * Dropper * Graduated cylinder (100ml) * Warm water * Yeast Solution * Sucrose * Dextrose * Lactose * Maltose Variables: Independent Variables:
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