How Does Salinity Effect Osmosis in Plant Cells? Introduction Osmosis is a type of diffusion but is the movement of water molecules in and out of the cells from a high concentration to low concentration through a semi permeable membrane. The aim of the experiment is to investigate the effect the salinity of solutions has on the process of osmosis and net weight gain/ loss by potato cells. This would be done by using similar size potato cubes and covering them with different concentrations of saline
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We only had the potatoes in their solutions for 20 minutes instead of the normal 30 minutes which could mean that the potatoes did not go through the whole process of osmosis. Also‚ a lot of the experiment was rushed as we were under pressure to finish as quickly as possible. Unfortunately the time constraint was caused by and outside influence unrelated to the lab itself‚ and so next time we could do a lab under normal
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Osmosis is a passive movement of water through a selectively permeable membrane moves from an area of higher concentration to an area of lower concentration. In this lab‚ we can determine the direction of diffusion of small molecules by measuring the diffusion of small molecules through dialysis tubing. This tubing acts as a selectively permeable membrane‚ and allow to pass larger molecules slowly. Introduction: Cells have kinetic energy and it causes the molecules of the cell to move around
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of free riding in the franchisor–franchisee relationship”. Journal of Business Venturing‚ 22(4)‚ pp 522–544 Lichtenstein‚ D.R.‚ Ridgway‚ N.M The Chartered Institute of Marketing (2009) Marketing and the 7Ps: A brief summary of marketing and how it works. The Chartered Institute of Marketing. http://www.cim.co.uk/Resources/ResourcesHome.aspx [Accessed 23/11/2012] Wallop‚ H Whitbread (2012)‚ Costa Coffee: The UK ’s favourite‚ http://www.whitbread.co.uk/whitbread/ourbrands/costa.html [Accessed 09/11/2012]
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Language techniques in Peeling the ONION • Linear narrative – Accident to recovery • First person narrative – gives reader insight into depth & severity of Anna’s experiences: a subjective view of Anna’s perspective • Writing style for young audience who identifies with the age of the narrator and the world she values. • Tone revels how Anna feels and her mood changes as she recovers • Narrative structure: Disjointed - Short sentences‚ breaks‚ ellipses
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EXTRACTION OF DNA FROM ONIONS ABSTRACT The purpose of the experiment was to experience firsthand the isolation of DNA form a plant tissue without destroying its structure and sequence. A white onion was used for the experiment. After several processes‚ DNA isolate was the visible result. Different chemical tests were performed on the DNA isolate‚ namely: Dische Test‚ Murexide Test‚ Wheeler-Johnson test and Test for Phosphate. Visible results were then noted. INTRODUCTION DNA (deoxyribonucleic
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UOS Financial Management & Control Individual Assignment 1 UNIVERSITY OF SUNDERLAND LEVEL MODULE: ASSIGNMENT CODE: TUTOR: DUE DATE: M FINANCIAL MANAGEMENT & CONTROL PGBM01 As per the schedule (April 2015) Assessment weight: 100% of module Outcomes Assessed: All module learning outcomes‚ knowledge and skills‚ are assessed in this assignment. This assessment is in three parts‚ please answer all elements. Please note that this is an individual assignment and the policy of the University on “Policy
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The results that were collected in lab #1 shows the relationship of surface areand volume in the artificial cells to the diffusion rate using the phenolphthalein-NaOH agar and the HCl solution. Lab #2 was a model of diffusion and osmosis‚ in which we filled the model cells with different solutions and determined the rate of diffusion. In lab #3‚ the results demonstrated the interactions between selectively permeable membranes‚ water‚ and solutes and how they are important in cellular and organismal
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OSMOSIS LAB BACKGROUND INFORMATION. Dialysis tubing is being used to model a plasma membrane. Isotonic solutions are solutions that have the same concentration of solutes on both sides of the membrane. Hypertonic solutions are solutions that have more solute to the one with less solute. Hypotonic solution are solutions that have less solute to the one with more solute. RESEARCH QUESTION:which dialysis tubing will gain the distilled water and which one will loss its content
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Diffusion and osmosis are processes that are a constant in our lives‚ even though many don’t realize it. Medicaments such as Fervex can be drunk only after diffusion has taken place and the powder granules have diffused into the hot cup of water. On the other hand‚ every day we become unintentional witnesses of osmosis when the roots of the plants try to suck up the water from the soil (1). The purpose of this lab is to show clearly in an understandable way how diffusion and osmosis happen and to
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