Potato Osmosis Introduction: A shipwrecked sailor is stranded on a small desert island with no fresh water to drink. They know they could last without food for up to a month‚ but if they didn’t have water to drink they will be dead within a week. Hoping to postpone the inevitable‚ their thirst drives them to drink the salty seawater. They are dead in two days. Why do you think drinking seawater killed the sailor faster than not drinking any water at all? Today we explore the cause of the sailor’s
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potential of a potato Aim Osmosis is the movement of water molecules from a region of high water concentration to a low water concentration through a semi-permeable membrane. Our aim is to investigate the water potential of a potato through osmosis‚ by finding the difference in weight before and after the potato has been set in a solution of water‚ sugar or salt. Trial Method Firstly we collected the equipment. This included a scalpel‚ potato cutter‚ and test tubes. Then we cut the potato using the
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the most known around the world‚ but it very important to me and the world. No one knows what really causes MS‚ but scientists have many hypothesis of how the disease is caused. There are 4 main hypothesis’. Immunologic is one cause some scientists believe to be true where the immune system malfunctions and starts eating away the myelin sheath. Another hypothesis for why MS is caused is environmental. Through pattern‚ people that live near the equator have less MS and if they had MS they usually lived
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Aim The aim is to find the concentration (mole/dm3 (M)) of solute in a potato cell by using the process of osmosis and different concentrations of sucrose solution. Background information Osmosis is diffusion of water across a partially permeable membrane. It moves from a solution with less solute concentration (high water potential) to a solution with more solute concentration (low water potential). The one with a high water concentration is called a hypotonic solution and the low water concentration
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Hypothesis Statement Trees that exhibit gumming are more resistant to fusarium dieback caused by the polyphagous shot hole borer (PSHB) because the gum secreted acts as a defense against beetles that attempt to penetrate the bark‚ and as a result grant the tree faux resistance to the Fusarium euwallaceae fungi. Introduction Californian agriculture is at great risk because of a disease being spread by the Polyphagous Shot Hole Borer (PSHB)‚ Euwallacea sp. The PSHB is an ambrosia beetle
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significant difference in the NP solution and the creek water solution. Although we found that the duckweed grows faster in the NP solution‚ rather than the creek water they do indeed have relatively the same mean. Overall our results supports our hypothesis. This also makes us question what kinds of factors are affecting the creek water to kill off the duckweed. Duckweed also is known to stop the growth of algae‚ but in our experiment we ended up having algae grow in some of the wells filled with creek
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The Efficient Market Hypothesis(EMH) was first given by Samuelson(1965)‚Fama(1965) and Mandelbrot(1966).It was based on “Random walk Theory”‚ and stated that since the market price will be affected by new information in the market‚ all available information have been fully reflected on the security price. There are three assumptions for the Efficient Market Hypothesis: 1.All investors are independent‚ rational‚ well-informed and hope for the highest profit; 2.All information are free and randomly
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Is Life Expectancy More Correlated with Obesity or Poverty? Hypothesis: When obesity and poverty rates are tested to see which is more correlated with life expectancy I would expect poverty to be more correlated and for it to be a negative correlation as well. I say this because obesity is in a way a subcategory of poverty. For example‚ people who are poorer tend to buy the less healthy foods because they are at a cheaper price‚ thusly causing obesity. Procedure: Research and Identify the obesity
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ToK reflects critically on the diverse ways of knowing and areas of knowledge and consider the role which knowledge plays a global society. Consists of: 1) Mutual Respect 4) Openness 7) communication 2) Disagreement 5) Changing positions 8) Negotiation 3) Tolerance 6) Debate 9) Curiosity Ways of knowing 1) Language (deaf children‚ connection between language and thought‚ how language is born‚ is it innate
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SECURITY ANALYSIS AND PORTFOLIO MANAGEMENT | EFFICIENT MARKET HYPOTHESIS | | MRIGANKA DAS‚ 13/09 | INTRODUCTION: The Efficient Market Hypothesis and Random Walks One of the early applications of computers in economics in the 1950s was to analyze economic time series. Business cycle theorists believed tracing the evolution of several economic variables over time would clarify and predict the progress of the economy through boom and bust periods. A natural candidate for analysis
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