including glucose‚ starch‚ and iodine potassium iodide were tested for permeability through the dialysis tubing. In the second experiment‚ several potato tuber cylinders were tested in different sucrose solutions. The potato cylinders were tested to see what would happen to its mass if they were in different sucrose solutions. There are three major terms that are mandatory to know before experimenting: isotonic‚ hypertonic‚ and hypotonic. An isotonic solution is when the solute concentration inside a system
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Equipment: Refer to Biology 12 Lab Manual – Investigation 13 Procedure: Refer to Biology 12 Lab Manual – Investigation 13 Data and Observations: The Potatoes change in mass after the process of Osmosis Test Tube # | Concentration of Sucrose Solution (mol/L) | Initial mass (g) | Final mass (g) | Change in mass (g) | Percentage change in mass (%) | 1 | 1.0 | 5.12 | 3.63 | -1.49 | 29.0% | 2 | 0
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Potato Lab Report: Effects of Sucrose Solutions on Potato Cells and Water Potential Abstract: Osmosis is a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one‚ thus equalizing the concentrations on each side of the membrane. In this experiment‚ we learn about Osmosis and Diffusion through potato cores in different concentration of sucrose‚ (water‚ .2‚ .4‚ .6‚ .8‚ 1.0). We realized that
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The Use of Sweeteners and the Rise in Obesity I have selected to discuss the relationship of the sweetener sugar (sucrose) between its consumption and the rise in obesity. There is a problem with the increase in sugar consumption. Sugar both drives fat storage and makes the brain think it is hungry‚ setting up a “vicious cycle‚” according Robert Lustig‚ MD‚ a UCSF pediatric neuroendocrinologist. Obesity is one of the top underlying preventable causes of death in the U.S. The rise of obesity
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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 | 0.2 | 2 | 8 | 0.4 | 4 | 6 | 0.6 | 6 | 4 | 0.8 | 8 | 2 | 1 | 10 | 0 | 1. Prepared 6 solutions. 0.2M‚ 0.4M‚ 0.6M‚ 0.8M‚ 1M sucrose solution and water. (Table 1) 2. Filled six boiling tubes with 5 cm3 of the solutions and labeled the boiling tubes.
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Investigating the Water Potential of a Potato. I have been asked to investigate the water potential of a potato. During my investigation I will not actually be able to measure a value for‚ as it is a pressure value (kPa). Osmosis is a special form of diffusion involving only water molecules. It is defined as "The passage of water from a region of high water potential to a region of low water potential through a partially permeable membrane" Definition of Water Potential. The potential for water
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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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qualitative analysis whose knowledge with other factors helped me to do so. CONTENTS Ø Introduction Ø Theory Ø Apparatus Ø Chemicals required Ø Detection of pH Ø Test for Carbon Dioxide Ø Test for Glucose Ø Test for Phosphate Ø Test for Alcohol Ø Test for Sucrose Ø Result Ø Conclusion INTRODUCTION The era of cold drinks began in 1952 but the indianization of industry marked its beginning with launching of limca and goldspot by parley group of companies. Since‚ the beginning of cold
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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 min. Over time‚ the rate of osmosis was measured by calculating the weight of each artificial cell on given intervals (every 10 minutes). The
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Topic 1 – Introduction 1. Definitions: anatomy‚ physiology‚ palpation‚ auscultation‚ percussion‚ homeostasis‚ negative feedback loop‚ positive feedback loop‚ intracellular fluid‚ extracellular fluid‚ interstitial fluid‚ anatomical position‚ supine position‚ prone position‚ (frontal or coronal‚ transverse‚ sagittal‚ midsagittal‚ parasagittal‚ oblique sections or planes)‚ cell‚ tissue‚ organ‚ organ system‚ serous membranes (distinguish between visceral and parietal layers)‚ pericardium‚ pleura‚ peritoneum
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