Diffusion in Cells Isabel Zak Question: How does the size of a cell affect the distribution of chemicals throughout the cell? Hypothesis: The larger the cell is‚ the more difficult it will be for the chemicals to reach the centre of the cell‚ and diffuse throughout it. This is because there will be a higher surface-area to volume ratio in the larger cells‚ making the centre of the cells further away from the surface. Therefore‚ when dipped in sodium hydroxide‚ the larger cells will not
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1 Diffusion is the movement of molecules (or ions) from a high concentration to low concentration. Diffusion is form of passive transport as energy does not need to be generated. Diffusion is complete when the concentration of molecules is equal on either side of the membrane. Diffusion rate can be influenced by many factors such as: Concentration gradient across the the membrane. Permeability of the membrane to the diffusing substance. Temperature. Surface area of the membrane. Question 2 2.1
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he mass and length of the potato piece must be kept the same in each experiment primarily because they affect the surface area of the piece‚ and varying surface area could have a great effect on the rate of osmosis. This is because in an experiment where the potato chip has a large surface area‚ there is a larger area of partially permeable membrane and therefore more opportunity for water particles to pass through. I will keep the surface area the same by keeping the mass and length
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Thomas Graham studied the behavior of the diffusion of gases of unequal densities when placed in contact with each other‚ using air as his control. He wanted to numerically prove how the diffusion of the gas volumes was inversely proportional to the value of the density of the gas‚ under constant temperature and pressure. The significance of this experiment was that in led to a reevaluation of the concept of the movement of matter‚ realizing that diffusion dealt with small immeasurable elements of
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Development of Islamic Banking in the UAE Selected Topics in Finance Development of Islamic Banking in the UAE Prepared by : Dalida Cheikh ID number : 200911197 Supervised by : Dr. Al Gielani Al Sherief Summer1- 2012 Contents Abstract 3 Introduction 3 Islamic Banks and Conventional Banks 4 Comparison of performance 2005 - 2010 5 Findings 7 Conclusion 13 References 14 Appendix 15 Acknowledgements I would like to express my special gratitude to my boss
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Astonmatin to UAE 1. Abstract 2. Introduction Aston Martin was founded in 1913 by Lionel Martin and Robert Bamford‚ which is a British manufacturer of luxury sports cars. These are cars which bring to life the freedom and enjoyment of the open road. From 1994 to 2007 Aston Martin was passed from hand to hand‚ until 2007 it was purchased for £479 million by a joint venture company. Now Aston Martin be owned by David Richards and John Sinders also Ford retained a part of stake in Aston Martin (
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over time by acculturation‚ diffusion‚ and innovation; It spreads by religions and language. Culture develops‚ spreads‚ and changes over time. Innovation‚ diffusion‚ and acculturation are the processes of how culture is changing. Innovation is taking existing technology and resources and creating something new to meet a need. For example‚ to solve the need for storage goods‚ some societies invented baskets woven from reeds because reeds were abundant. Diffusion is the spread of ideas‚ inventions
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Osmosis and Diffusion Lab Observations: Diffusion: | Before | After | Color of liquid sack | clear | blue | Color of liquid in beaker | dirty yellow | golden | Glucose present Stick Test | no | yes | Color of the test stick | No change in color | Green | Osmosis: | Fresh | Salt | Beginning mass of potato | 2.51 | 2.16 | Texture of potato | Dry | Dry | Overnight mass | 3.12 | 1.84 | Overnight Texture | Hard‚ strong | Squishy‚ pliable | Data and Analysis: Diffusion: Iodine
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liquidity‚ the UAE economy continued to perform well with the economy recording high double digit nominal growth rates since 2003. In 2006‚ UAE’s gross domestic product (GDP) at nominal prices increased to AED599.2bn‚ recording a substantial increase of 23.4% over AED485.5bn recorded in 2005. Early estimates from Ministry of Economy (MOE) indicate that the nominal GDP increased by 16.5% to reach AED698.1bn in 2007. In terms of real GDP‚ early estimates from MOE indicate that the UAE economy grew
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Booming UAE Telecom Sector The UAE’s telecommunication market has shown tremendous growth over the recent past‚ mainly propelled by the government initiatives aimed at the deregulation of the market and introduction of competition. The TRA (Telecommunication Regulatory Authority) remains at the forefront of the success of the country’s telecom sector. It is continuously considering and evaluating ways to further intensify competition in the UAE telecom market. “Booming UAE Telecom Sector” provides
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