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Term Papers on Science

The Effect Of Concentrations Of Starch And Sugar Solutions On Synthetic Semi-Permeable Membranes
Number of words: 628 - Number of pages: 3

.... on itself. 5. Tie a tight knot. Leave the extra string. 6. Insert the transfer pipette (cut off top) about one third of the way into the tubing. 7. Tie a knot securely around the transfer pipette. Leave the extra string. 8. Add two transfer pipettes (two squirts) of the Gatorade solution to the tubing. 9. Add two transfer pipettes (two squirts) of the starch solution to the tubing. 10. If you spilled any solutions while transferring, carefully rinse the tubing. 11. Fill the cylinder with distilled water to about 2.54 cm from the top. 12. Place the tubing into the cylinder of water. 13. Res .....

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Carbon
Number of words: 182 - Number of pages: 1

.... starch, and paper are compounds of carbon with hydrogen and oxygen. Proteins such as hair, meat, and silk contain these and other elements such as nitrogen, phosphorus, and sulfur. More than six and a half million compounds of the element carbon, many times more then those of any other element, are known, and more are discovered and synthesized each week. Hundreds of carbon compounds are commercially important but the element itself in the forms of diamond, graphite, charcoal, and carbon black is also used in a variety of manufactured products. Besides the wide occurrence of carbon i .....

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Medical Revolutions
Number of words: 1010 - Number of pages: 4

.... received their education on an apprenticeship basis but the younger men, those who made up the bulk of the army surgeons, usually held a medical school diploma along with an office internship. Little attention was paid to clinical instruction, and in most cases the laboratory was all but forgotten. Further, stethoscopes, thermometers, syringes, and the like were widely used in Europe while many doctors here at home had never seen them let alone used them. In regard to ability and competence, there is no reason to believe the doctors in the North and the South differed in any significant way .....

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Buoyant Forces
Number of words: 281 - Number of pages: 2

.... the apparent weight of the cylinder when it is completely submerged in a bath of water using the formula Wa=ma*g , this was found to be 88.5grams. Knowing these two numbers, the bouyant force that the water places on the object can be calculated using the formula Fb=W-Wa , Wa=.8673n W=.98n Fb=.1127n Part 2 of this lab consisted of weighing an empty cup, which was 44grams. And then filling another cup up to a certain point the if any more water was added, it would spill out of a little opening in the cup, the water spilled out could be caught in the first cup. This is done so that t .....

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Black Holes
Number of words: 1047 - Number of pages: 4

.... you aren’t getting out again. The velocity you need to break away from a graviational pull is called the "escape velocity". Roughly, earth’s escape velocity is about 25,000 M.P.H. (11.2 kilometers/second). Earth’s mass is nothing compared to the mass of a star that has the potential to become a black hole. A black hole has so much mass in such a small area, that its escape velocity is greater than the speed of light. So if were all living on earth, and earth was a black hole, we would need to go at the speed of light in order to get to the moon (and not to mention a lot of milk so our b .....

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Fishes
Number of words: 503 - Number of pages: 2

.... contains a “spiral valve” intestinal system, which increases the surface area and lengthens the time food is digested in the unusually short intestine system of a shark. Sharks sexually reproduce. Unlike a shark, rays have flattened bodies so they can hide themselves in the sand at the bottom of any shallow water area and wait for a meal. Rays also have a whiplike tail for defense and jaws, which it uses to crush mollusks and crustaceans. Class Osterrichhthyes has the most separate species of any vertebrate class. Unlike their oceanic cosines Bony fish have a skeleton made fr .....

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Computer History
Number of words: 1410 - Number of pages: 6

.... of the military’s need for the computer earlier this century, great advancements have been, and will continue to be made in the way of computers and other technologies. Truly the first computers, or tools made with the intention of being used for calculating, were made many centuries ago. Throughout history, people have used a diverse array of devices to help them do both simple and complex calculations. Tools have varied from fingers to computers. Tools such as the abacus have aided men for many centuries in doing math. They have simplified complicated tasks, and have, in some instan .....

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Barium
Number of words: 563 - Number of pages: 3

.... used as a weighing agent in oilwell drilling fluids. The carbonate has been used as a rat poison, while nitrate and chlorate give colors in pyrotechny. The impure sulfide of radiantly glows after exposure to the light. metal has few practical applications, although it is sometimes used in coating electrical conductors in electronic apparatus and in automobile ignition systems. sulfate (BaSO4) is used as a filler for rubber products, in paint, and in linoleum. nitrate is used in fireworks. A form of sulfate, which is opaque to X rays, is used for the X-ray examination of the gast .....

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Lipids
Number of words: 521 - Number of pages: 2

.... are also used in making cell membranes. They make it so that the cell can maintain it’s shape by keeping water and water-soluble compounds from passing through it. The lipids that are waxy are usually used to make protective coatings on the surface of plants and animals. Since a lipid is an organic compound it contains carbon. They also contain hydrogen and oxygen, but in some very complex chains there is also phosphorus and/or nitrogen. Lipids are made by the dehydration synthesis of glycerol and fatty acids. This is when three molecules of fatty acids combine with one .....

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Mitochondria 2
Number of words: 752 - Number of pages: 3

.... The many infoldings of the cristae are responsible for providing the mitochondrion with a large surface area which enhances the productivity of respiration. The inner membrane and outer membrane effectively divide the mitochondria into two internal compartments. The space located between the outer and inner mitochondrial membrane is called the intermembrane space. The space enclosed by the inner membrane is called the mitochondrial matrix. It is here that many of the metabolic steps of cellular respiration occur. The intermembrane space reflects the solute composition of the cytosol, .....

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