about the circulatory system and the blood that runs through it‚ the use of blood transfusions have steadily declined. As a result transfusion alternatives have steadily increased. Through out this progression of knowledge such debates have come up‚ such as religious and ethical questions regarding transfusions of blood and blood fractions. There are also arguments regarding whose choice it should be to refuse a medical treatment‚ much less the transfusion of blood. At times some doctors will not go
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1. Blood type “O” is very important for the people that are in need for extra blood. Say if someone got into an accident and lost extremely amount of blood‚ the surgeons will have to use type “O” blood to give them the amount of blood needed. It can be transfused to a patient with any blood type. Blood banks being low on type “O” is a huge problem in today’s society; without type “O” blood injured people wouldn’t be able to make it. Blood donors are encouraged to donate blood to hospitals and different
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Effect of Osmosis on Egg Introduction: The purpose of this lab was to test the effects of hypertonic‚ isotonic‚ and hypotonic environments on the weight of a shell-less egg. We tested the weight of the egg after thirty minutes in water as well as corn syrup. I hypothesized that when the egg was placed in water‚ it would swell and gain weight because it was in a hypotonic environment. That hypothesis was correct as the egg grew slightly and the weight when up. I also hypothesised that when the egg
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Cells must move materials through membranes in order to maintain homeostasis. The cellular environment is aqueous‚ indicating that the solutes dissolve in the solvent‚ water. When a cell is hypertonic‚ or hypotonic‚ to its surroundings‚ it tries to make concentration of solution inside and outside itself equal. However‚ the solutes are too big to pass the cell membranes without the help of channel proteins‚ or transport proteins. Water may freely pass through the membrane by osmosis‚ which
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Osmosis is the diffusion of water molecules from an area of high concentration of sucrose solution to an area of lower concentration of sucrose solution‚ through a selectively permeable membrane. The water molecules move down a concentration gradient in osmosis. Two diagrams of osmosis are shown in figures 1 and 2. Figure 1 shows the diffusion of water molecules through a selectively permeable membrane from an area of highly concentrated sucrose solution to an area of lower concentrated sucrose solution
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Observing Cells Objectives: After completing this exercise and reading the corresponding material in your text‚ you should be able to 1. Prepare a wet mount slide 2. Identify structures described in this lab on slides 3. Cite examples of the wide diversity of cell types 4. Relate differences in structure among cells to functional differences Introduction Structurally and functionally‚ all living things share one common feature: all living organisms are composed of cells. The
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PLANT CELL AND ANIMAL CELL LECTURER : ENCIK AZHAR GROUP’S NAME : 2. Mohd Alimi 3. Suraya Hani 4. Norhaswana CONTENT INTRODUCTION 3 WHAT IS CELL? 4-5 HISTORY OF CELLS DISCOVERY 6 ANIMAL CELL 7 PLANT CELL
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Wikipedia A blood donation occurs when a person voluntarily has blood drawn and used for transfusions or made into medications by a process called fractionation. Blood donation benefits extend beyond those who receive life-giving blood. Donors also receive numerous health benefits. Blood donation benefits to donors include: • Free health screening: Every time you give blood‚ a medical technician‚ doctor or nurse will check your blood pressure and give you a free health screening.
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concentration. When the molecules have diffused so that they are in a uniform concentration‚ this state is called equilibrium. This phenomenon plays a key role in many disciplines of biology‚ physics‚ and chemistry. It is closely related to the way in which cells take up nutrients‚ thus life could not exist without it. Regardless of the state of matter that a group of molecules finds itself in‚ all the molecules are moving to some degree. They not only move‚ but they do so randomly‚ in no particular pattern
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Osmosis Lab Report Hypothesis: Osmosis will occur when there is an uneven distribution of solute in a solvent. The higher the solute in solvent‚ then there will be a higher rate of osmosis through the diffusion gradient forming a hypertonic or hypotonic solution. Solvent with equal or no solute forms an isotonic solution. Materials: Distilled water‚ sucrose‚ dialysis tubing‚ string‚ 250 ml beaker. Procedure: To demonstrate and isotonic solution we needed 3 inches of dialysis tubing. We
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