diffusion where water moves through a selectively permeable membrane (a membrane that only allows certain molecules to diffuse though). Diffusion or osmosis occurs until dynamic equilibrium has been reached. This is the point where the concentrations in both areas are equal and no net movement will occur from one area to another. If two solutions have the same solute concentration‚ the solutions are said to be isotonic. If
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Potatoes taste pretty good. Mashed‚ fried‚ baked‚ or scalloped‚ but how about taking the place of a car battery? If a potato can replace a AA battery and light up a light bulb‚ who’s to say multiple potatoes couldn’t serve the same purpose in a car? Potatoes use the acids within them to start a reaction between the copper and zinc wires on either side of it. This reaction causes the flow of electrons passing through the wires and using the positive and negatively charged electrons to power the
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n 8 POTENTIAL FINGERNAIL HEALTH WARNINGS INTRODUCTION: Fingernails and disease don’t go together in most minds… but they should. Your fingernails can give you valuable health warnings and signal the presence of serious disease. Take a good look at your nails. Hold a hand level with your nose about a foot out from your face and scrutinize each one. Look at the curves‚ dips‚ ridges‚ and grooves. Check out how thick or how thin they are and if your nails are chipped or broken. Make a note of
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in Sweet and White Potato Research Aim: To observe whether equal sized white potato or sweet potato cores reached the isotonic point in the same concentration of sucrose solution. Introduction: Osmosis is diffusion of water from areas of high water potential to areas of low water potential. It does not require an input of energy. Plants use osmosis to transport minerals from their roots to their leaves‚ and to take in water in the soil. Because the plant cell is taking in water and minerals‚ its
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Full Length Research Paper Nutritional potential of two leafy vegetables: Moringa oleifera and Ipomoea batatas leaves Ibok Oduro‚ W. O. Ellis and Deborah Owusu* Department of Biochemistry and Biotechnology‚ Kwame Nkrumah University of Science and Technology‚ Kumasi- Ghana. Accepted 30 January‚ 2008 Levels of some nutrients in Moringa oleifera leaves as well as seven varieties of sweet potato (Ipomoea batatas) leaves were determined using standard analytical methods. Crude protein ranged from
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Tea production potential in Pakistan By Mohammed Arifeen Tea is the world’s most favored beverage due to its general acceptability‚ comparative cheapness and advantageous effects. It is the second most drank beverage after water. The tea plant originated from South East China and slowly spread to Indo-Pak subcontinent‚ Sri Lanka and further into tropical and sub tropical countries Pakistan was a bulk producer and exporter of tea until 1970 but after the loss of its eastern wing (than known
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Class: 4Sc1 Teacher: Pn XX Group Name: XX INTRODUCTION A water rocket is a type of model rocket using water as its reaction mass. The pressure vessel—the engine of the rocket—is usually a used plastic soft drink bottle. The water is forced out by a pressurized gas‚ typically compressed air. The term "aquajet" has been used in parts of Europe in place of the more common "water rocket" and in some places they are also referred to as "bottle rockets" (which can be
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Effect of Temperature ( C ͦ) on Enzyme Catalase Activity in potato Aim: To investigate the Effect of temperature (10‚ 37‚ 60) Celsius (C ͦ) on enzyme catalase activity in potato using 2% of hydrogen peroxide (H202) as the substrate measuring the height (cm) of oxygen gas (bubbles) and calculating the volume of oxygen bubbles produced (cm3) Introduction: Enzymes are biological catalysts that speed up metabolic reactions without being affected. They lower the activation energy needed to start
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Aim To investigate the effects of increasing salinity on potato cell mass. Background Information This experiment is based upon osmosis. Osmosis can be defined as the net movement of water molecules from a region with high concentration to a region with low concentration. This movement must take place across a partially permeable membrane such as a cell wall‚ which lets smaller molecules such as water through but does not allow bigger molecules to pass through. This process will take place until
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Impressionism and Post-Impressionism Analysis of “The Potato Eaters” by Vincent Van Gogh In 1883‚ after leaving his wife Sien and his children Vincent Van Gogh headed to Nuenen. Coming off a disturbing part of his life‚ which included the break up with his ex-wife with several issues and suffering from gonorrhea‚ he was having a considerably difficult time. In Nuenen‚ Van Gogh started to devote himself to drawing‚ and started to gain attachment and sympathy
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