OSMOSIS ASSESSMENT TASK Introduction Osmosis is the net movement of water particles from an area where they are in high concentration to an area of low concentration‚ down a concentration gradient. Hypothesis: Will a high concentration of salt solution affect the mass of a potato chip? Variables Controlled variables: -The sizes of the potato chips. Bigger size of potato chips will weigh heavier and the smaller potato chips will weigh lighter‚ if we don’t use the same size of potato chips
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Juan Villacis COMM 1402-02 December 9‚ 2013 Title: MORE PEOPLE SHOULD DONATE BLOOD. I. Introduction A. Attention Getter: How many people have donated blood before? Does anybody know how many people can be saved by one donation? One donation can help save the lives of up to three people and since blood is an essential substance that cannot be manufactured‚ It can only come from volunteer donors (RedCrossBlood.org.‚2013) B. Tie to Audience: Many people feel scared when they see needles and most
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involved in blood clotting Blood clotting or blood coagulation occurs when blood vessel is damaged or broken. There are there mechanisms in blood clotting process: vascular spasm‚ platelet plug formation and blood clotting (coagulation). Vascular spasm Vascular spasm occurs immediately after a blood vessels get injury. The muscle of the blood vessel contracts and hold off the blood supply to the area and it can hold for minutes to hours; this process prevents the loosing blood from the body
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Title: Egg Osmosis Purpose: The purpose for doing this lab is to show how Osmosis takes place. It is supposed to show how the eggs would react to a change in their environment. The way to show how it would change would be putting eggs in different controlled environments. Each of the eggs will be put in three different environments. Vinegar‚ Karo Syrup‚ and water. Each egg will have to have a documented reaction that each will have. Introduction: The lab will allow us to see and explain each
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Experiment title: Preparation of Biological Materials for Microscopic Examination Objectives: 1. To learn how to use a microscope. 2. To study the cell structure of starch grains‚ onion cells and cheek cells. 3. To differentiate the difference between starch grains‚ onion cells and cheek cells. Introduction: Microscope is an optical instrument use to magnify micro objects that hardly or impossible to be observed by naked eyes‚ so that the objects can be studied. Compound light microscope
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Experiment to Investigate Osmosis in Potatoes The aim of this experiment is to investigate the movement of water in and out of plant cells. The cells chosen for study will be taken from potato tubers. Firstly I will explain what osmosis is. Osmosis is the passage of water from a region of high water concentration through a semi permeable membrane to a region of low water concentration. This definition contains three important statements: a) It is the passage of water through a semi permeable membrane
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I S E 1 Cell Transport Mechanisms and Permeability P R E - L A B Q U I Z 1. Circle the correct term. A passive process‚ diffusion / osmosis is the movement of solute molecules from an area of greater concentration to an area of lesser concentration. 2. A solution surrounding a cell is hypertonic if: a. it contains fewer nonpenetrating solute particles than the interior of the cell. b. it contains more nonpenetrating solute particles than the interior of the cell. c. it contains the same
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needing a blood transfusion. The scene is all too real and it happens every day. In a single car accident‚ a person could need up to 100 pints of blood. The average person can donate 3 pints every 56 days (redcrossblood.org). This is why‚ today‚ I urge you to go out and donate blood. I know some of you may hate the thought of needles or think that giving blood won’t really help. But‚ please consider what I say and make a better informed decision after hearing the benefits of donating blood. People
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Chapter 2 IB Biology 2.1 Cell Theory 2.1.1 Outline the cell theory (2). • All organisms are composed of one or more cells • Cells are the smallest units of life • All cells come from preexisting cells • TOK: cell theory replaces the former ideas of spontaneous generation or abiogenesis in which inanimate matter assembles itself into living forms • Exception: muscle cells- more than 1 nucleus‚ very long; (fungal cells) hyphae roots- not a single unit; protoctista- not specialized to single
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Blood Transfusion is commonly being ordered to patients who lost a great deal of blood due to a diseasecondition or an accident. It can also be ordered by the physician if the patient is to undergo an operation that would involve considerable blood loss. The following is a step-by-step checklist of things to do and other responsibilities to ensure proper blood transfusion and prevent any unwanted reactions and errors. 1. Verify the physician’s written order and make a treatment card according
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