potential Aim of the experiment: Finding the water potential of potato. Biological principles: Independent variable: concentration of the solution. Dependent variable: percentage changed in weight of the potato strips. Controlled variable: size of the potato strips‚ it can be controlled by cutting the length of the strips. Procedure: Table 1. Concentration of sucrose solution table Concentration/ M | Sucrose Solution/ ml | Distilled Water/ ml | 0 (Water) | 0 | 10
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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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white‚ NaCl‚ glucose‚ or sucrose. The equipment used was: 5 dialysis tubing‚ a scale‚ bekers‚ water‚ egg white‚ sucrose‚ glucose‚ NaCl‚ and 5 cups. We put the five dialysis tubing filled with one of the five substance into a cup filled with one of the substance: water‚ egg white‚ NaCl‚ glucose‚ or sucrose. Then we let them sit in there for 30 mins then took them out of the cups and remassed them. Our results were: Original Mass of dialysis tubing Water Sucrose Glucose NaCl
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Experiment #1 Preparation of Ethanol from Sucrose Based on R. Weglein & C.L> Yau‚ CHEM 203 Experiments in Organic Chemistry II Laboratory‚ 5th Edition‚ 2006‚ p29-32. Statement of Purpose: An aqueous solution of ethanol is prepared by the fermentation of sucrose. The percent alcohol is the resulting solution and the percent conversions of the sucrose are to be determined. Introduction: Sucrose is a molecule containing glucose and fructose. http://faculty.tcc.fl.edu/scma/phelpsj/experiments/ethanol
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the pores of the bag. Sucrose was not able to pass through as the molecules were too big to enter. This is similar to a cell because the size of a molecule can determine whether or not the substance can enter the cell through diffusion. Larger molecules will require facilitated diffusion‚ using a transport protein‚ or active transport‚ using a transport protein and also ATP (HyperPhysics.edu). Since water can pass through the dialysis
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tQUESTIONNAIRE 1) Do you like to eat potato chips? Yes No 2) Which brands of potato chips are you aware of? ____________________ ____________________ ____________________ ____________________ ____________________ if anymore please mention____________________________ 3) Which Brand in potato chips do you eat? Lays Balaji Wafers Bingo Pringles Uncle chips 4) What do you like in the brand of potato chips which you eat? _________
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concerned with Irish history. Looming over the scene depicted is the spectre of the potato famine that afflicted Ireland from 1845-49. The potato crop‚ staple for the Irish‚ failed‚ and with cataclysmic results. About half the population of three million died‚ while a million people emigrated – many to America. The first section of the poem is written in alternately rhymed quatrains that describe a rural scene of potato digging that is clearly in progress much later than a similar scene around the time
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concentration across a semi 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
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On our surface‚ inside and all parts in between‚ necessary units called cells are constantly keeping your body in a living condition. Robert Hooke is who identified and named cells. “He thought that the small ‚ simple units looked like the bare prison cells. His work launched a new frontier in scientific exploration that led to modern cell theory; all living things are made of cells‚ cells are the basic units of structure and function in all living things‚ and all cells come from the reproduction
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Abstract In this lab we separated components of a simulated preparation‚ panacetin and making use of its acid base properties. To obtain such a pure compound‚ the compound we want must be separated from its other natural components‚ which can be done by manipulating physical and chemical properties. Panacetin contains sucrose‚ aspirin and an unknown which can be acetanilide or phenacetin in which phenacetin was created and weighed. Introduction In this lab our basic goal was to make the sucrose‚ aspirin
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