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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Ahmed Salem 17/1/2011 Section 3 The process of Natural Importance Introduction Osmosis is when a fluid passes threw a semi permeable membrane. Moving from an area in which a solute such as salt is present in low concentrations to an area in which the solute is present in high concentrations. There are three types of osmosis: hypertonic is when there is high concentration and the cell has no water inside it (shrunk)‚ hypotonic is when there is low concentration and the cell has swelled up or
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Diffusion and Osmosis Worksheet Diffusion is the movement of particles from areas of higher concentration to areas of lower concentration. It is a natural‚ random process. This means that it does not require extra energy input. 1a. These are pictures of molecules frozen at two different times. Draw arrows to show the direction each particle might travel due to diffusion in diagrams A and B. A. B. Random arrows Random arrows 1b. Describe the way the particles
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COMBUSTION AND FIRE INVESTIGATION There are many different types of fires and it can be quite difficult to establish what may have started the fire in the first place. Fire investigation is an important process that attempts to establish the cause of the fire and whether a criminal act has taken place. The National Fire Statistics in the UK compiled by the Home Office states that 25% of fires are electrical in origin but this does not tell the whole story. The statistics are compiled from fire
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An investigation to find the water potential of potato and carrot tubers in a sucrose solution‚ of concentration 0.00 – 0.50Mol‚ over a 24 hour period Interpretation Written Communication C1 From our graph it can be seen that the concentration of sucrose solution is 0.18 M at 0% change in mass for the potato and 0.355 M at 0% change in mass for the carrot. I will use these values to find the solute potential by using the calibration graph. I will work out the water potential by using the
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DSME2050H Group 21 Investigation Report - Poon Keung Workshop CHAM‚ King Wah David (1009630152) CHONG‚ Yau Ka Alex (1155002389) LEE‚ Joo Eun June (1155017533) LEE‚ Jun Hee (1155001741) LEUNG‚ Cheuk Wai Isaac (1155000908) LUK‚ Ka Wing Anthea (1155003024) NG‚ Sze Ki Cobi (1155002560) WONG‚ Nga Yan Dorothy (1155000845) YUNG‚ Yi Tak Amy (1155004085) 本強 洋服 Group 21 – Investigation Report 2013 1. Company Profile Poon Keung Workshop (“Poon Keung”) is a manufacturer of business
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CURRICULUM REVIEW Investigations in Number‚ Data‚ and Space April 25‚ 2014 Investigations in Number‚ Data‚ and Space Curriculum Background Many school districts across the country utilize the Investigations in Number‚ Data‚ and Space (a.k.a. Investigations) curriculum. Mansfield Independent School District‚ where my daughter attends school has been using this curriculum for the past several years. Investigations is a comprehensive K-5 math program developed by TERC and partially funded
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Some reasons that a homicide investigation starts at the primary crime scene is mainly because the police are usually called to this location by the person who discovers the body‚ or‚ a witness to the crime‚ but it could also in some cases even be the victim. In homicide cases‚ the location where the body is discovered hold a great deal of physical evidence and serves as a starting point for the beginning of an official investigation. At this point it is safe to say that it is important to assume
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Midterm Questions Criminal Investigation Unit 5 Project Norman Jones CJ210-04 1. What are methods of inquiry and how are they used in criminal investigation? Methods of inquiry are a set of principles used to gather and process information in the pursuit of providing
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Criminal Investigations The method of inquiry is the way that an investigator or detective gathers information about a specific case. There is several different method of inquiry such as evidence collection‚ witness and victim statements‚ and information stored in public and private databases. The methods of inquiry are used to figure out what happened at a particular crime scene. A criminal investigator is trying to establish the who‚ what‚ where‚ when‚ why‚ and how of the crime. During this process
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