of the bags‚ identify whether the solution inside was hypertonic‚ hypotonic or isotonic in comparison to the beaker solution it was placed in. Bag #1’s solution was hypotonic compared to the solution of beaker #2. Bag #2’s solution was also hypotonic compared to the solution of beaker #2. Bag #3’s solution was isotonic compared to the solution of beaker #2 and Bag #4’s solution was hypertonic compared to the solution of beaker #1. 2. Which bag increased the most in volume? Why? Bag #1 increased
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2013 Methods and Materials (Bread Mold Lab) Block 1 The materials needed to conduct this experiment are six small squares of bread‚ a container of milk‚ four small Ziploc bags‚ a thermometer‚ a phone to record data and a heat lamp. The container of milk will be used for residue on the inside of two of the plastic bags. The heat lamp will be used to generate heat onto the bread towards the possibility of mold. The thermometer is used to measure the heat that the heat lamp is producing; this is
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higher percentage of popped kernels when frozen. This is relevant because most people would like to get the best value out of items they purchased and this may demonstrate one way to do that. I will be freezing multiple bags of popcorn and then popping both frozen and unfrozen bags in the microwave. Finally I will count the popped and unpopped kernels to determine the percentages for both variables and if there is a difference. Literature Review Through my research I did not find any other experiments
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Osmosis Rates in Artificial Cells Daniel George Department of Biology Grand Valley State University 1 Campus Drive Allendale‚ MI 49401 georged@mail.gvsu.edu Abstract The lab for this paper was conducted for the topic of osmosis‚ the movement of water from high to low concentration. Five artificial cells were created‚ each being filled with different concentrated solutions of sucrose. These artificial cells were placed in hypertonic‚ hypotonic‚ or isotonic solutions for a period of 90
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The Campaign Planning Brief – Country Road Bags | 2010 | The campaign planning brief provides an overview of the marketing program which will be used in this year’s up and coming Country Road bag campaign. This brief will also cover and enlighten the potential ways in which Country Road will approach their target audience and its large university student market. | | University of Technology Sydney – 24510 Advertising Research Kohei Himura - 10732307 Table of Contents Marketing Objective
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achieve these objectives‚ we had to fill the dialysis tubing with either water‚ or different amounts of sucrose. We then tied off the tubes and put them into beakers of distilled water to see how the color changed in the bag/beaker. The result was that the more sucrose in the bag‚ the greater the final mass. Introduction: The reasons for doing this lab are so that we can learn about osmosis with a model similar to a cell and so that we can have a better understanding of the process and nature
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sucrose affect osmosis through dialysis tubing? B. VARIABLES 1. The independent variable in this lab is the molarity of sucrose each dialysis bag is filled with. The time (30 minutes)‚ the temperature (23C) and the type of dialysis tubing used are all constants. 2. The dependent variable is the final mass of the dialysis bag. 3. The control in the experiment is distilled water‚ as it does not contain sucrose solution. C. MATERIALS NEEDED 4. Five 30
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five dialysis bags‚ ten orange clamps to seal our cells‚ and breakers labeled on thought five. To make sure that the dialysis bags stayed durable they were soaked in water for about ten minutes (or they softened). When the bags were ready to be filled with sucrose solution‚ the bags were clamped on one side and then opened on the other side. Each bag was then filled with 10 mL of certain solution. Bag one had just tap water‚ bag two had 20% sucrose‚ bag three consisted of 40% sucrose‚ bag four had 60%
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end of each piece of dialysis tubing to form 2 bags. Pour 25ml of each of the following solutions into separate bags: a. Distilled water. b. Sucrose(sugar). remove most of the air from each bag by drawing the dialysis bag between two fingers. Tie off the other end of the bag. Leave sufficient space for the expansion of the contents in the bag.(The solution should fill only about one-third to one half of the piece of tubing. Rinse each bag gently with distilled water to remove any solution
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Examining Diffusion and Osmosis Introduction: Purpose: 1. To simulate and observe the diffusion of solutes and the osmosis of water through a semipermeable membrane through color change and sugar tests. 2. To speculate osmosis occurring in dialysis bags and potato cores by comparing percentage change in masses. Background information: Molecules are always in random‚ constant movement due to their kinetic energy. This causes the molecules of a cell to move around and bump into each other. The
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