rate of diffusion in a number of theoretical cells. The objectives for this lab are: (1) To define concentration gradient‚ (2) To explain experimental data concerning different concentration gradients‚ (3) To complete a data table and prepare a graph to illustrate the data‚ and (4) To apply information from this experiment to other related problems. MATERIALS: 6 pieces of dialysis tubing Sucrose solution concentrations of 0M‚ .2M‚ .4M‚ .6M‚ .8M‚ 1.0M String
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knowledge that may be tested in CMA Entrance Examination questions‚ but they do not represent simulations of the style and composition of CMA Entrance Examination questions. This material contains a selection of problems and cases as well as their solutions‚ most of which focus on a few related topics. Some‚ however‚ are teaching cases that integrate several Syllabus topics. You are cautioned that the set of illustrative questions in this material does not cover the entire range of Syllabus requirements
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Examining the Effects of Mass and Type Of Sugar on Yeast Fermentation Lab Purpose: To measure and analyze the effects of various types and masses of sugar in an ethanol fermentation reaction with yeast. Introduction: Ethanol fermentation is a system in which hydrogen ions from NADH + H + are broken down in order to release the trapped energy and regenerate NAD+. In the absence of a mitochondria or oxygen ethanol is formed‚ which is typically found in bacteria and some yeast. Yeast
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Chapter 7 Activity-Based Costing: A Tool to Aid Decision Making Solutions to Questions 7-1 Activity-based costing differs from traditional costing systems in a number of ways. In activity-based costing‚ nonmanufacturing as well as manufacturing costs may be assigned to products. And‚ some manufacturing costs—including the costs of idle capacity--may be excluded from product costs. An activity-based costing system typically includes a number of activity cost pools‚ each of which has its
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pertains to the analysis of the companies Pfizer Inc and Sanofi S.A. Pfizer Inc is a major player in the global pharmaceutical industry and is driven by the vision of improving the life and health of the consumers through innovative discoveries and solutions. The company is diversified geographically and the global healthcare portfolio comprises of human as well as animal biologic & vaccines and small molecule medicines along with a broad range of nutritional products. It also markets several of
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to test the weight of six potatoes before and after being put into different sucrose solutions. The following data was observed and collected throughout the experiment. Observations: -Qualitative: The potatoes were: Tubed shaped Yellow in color Initially hard in texture -Quantitative: Table 1: Weight of the potato in grams before and after placed in a different concentrations of sucrose solutions. Sucrose solution (M) Weight Before (g) ± 0.01 (A) Weight After (g) ± 0.01 (B) 0 4.56
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Problem Set # 3 Solutions Chapter 7 #2 a) The production function in the Solow growth model is Y = f(K‚L)‚ or expressed in terms of output per worker‚ y = f(k). If a war reduces the labor force through casualties‚ the L falls but Capital-labor ratio k = K/L rises. The production function tells us that total output falls because there are fewer workers. Output per worker increases‚ however‚ since each worker has more capital. b) The reduction in the labor force means that the capital stock
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What is the role of 0.25M sucrose as the medium for the fractionation process? Cold sucrose does not chemically react with cell organelles Due to the density and size of sucrose molecules‚ it is able to suspend pellets for configuration while providing a solution where the centrifugation can be better balanced Sucrose offers a liquid medium in which less dense fractions can be poured off as supernatant at the end of each centrifugation step. 0.25M sucrose solution is isotonic and therefore
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Irodov Problem 3.7 As shown in Figure 1‚ the charges are located in at the four corners of the square ABCD whose diagonal is of length 2l. Since the point Xis located at a height of x units from the plane of ABCD along its central axis‚ the distance of X from any of the corners A‚B‚C and D is . The electric field strengths due to each of the four charges located at corners A‚B‚C and D are given by‚ The vertical components of EC and EB will cancel
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constant speed of 2.0 m/s2 . (b) The elevator has a constant upward acceleration of 2.0 m/s2 . (c) The elevator has a constant downward acceleration of 2.0 m/s2 . (d) The cable snaps and the elevator falls freely (ignore friction and the bloody end!). SOLUTION: The weight of the person depends on Mass and g‚ therefore: W = M g = (70.0 kg) 9.80 m/s2 = 686 N downward in all cases (a)-(d). Using the free-body-diagram for the person is shown to the right‚ We solve for N (which equals to what the scale reads)
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