Surface area / Volume ratio Experiment Introduction: The surface area to volume ratio in living organisms is very important. Nutrients and oxygen need to diffuse through the cell membrane and into the cells. Most cells are no longer than 1mm in diameter because small cells enable nutrients and oxygen to diffuse into the cell quickly and allow waste to diffuse out of the cell quickly. If the cells were any bigger than this then it would take too long for the nutrients and oxygen to diffuse into
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varying the surface area to volume ratio (2.0046: 1‚ 1.4923: 1‚ 0.9425: 1‚ 0.6480:1‚ 0.5970:1) affect the amount of heat lost over a period of 6 minutes of 50cm3 water with a temperature above 50? b. Prediction and Hypothesis. Make a prediction about what you expect to be the outcome. Explain your prediction using scientific ideas. I predict that the bigger the surface area to volume ratio‚ the lesser the heat will be lost. And the smaller the surface area to volume ratio the more heat will be
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of results Surface area to volume ratio Time taken for HCL acid to diffuse (seconds) 14 38 9 90 7.3 139 6.5 178 6 185 3. Do your results support your hypothesis‚ use date from your table and graph to support your answer‚ you should also identify any anomalous results. My hypothesis was ‘as the surface-area-to-volume ratio decreases the diffusion rate increases’ my results support my hypothesis‚ because in my table of results when the surface area to volume ratio is at 14 the diffusion time
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AP Biology II 11/22/13 Title: The Effects of Surface Area to Volume ratio in Agar Introduction: What is an efficient way to maximize mass but minimize diffusion time in cell? Answer: An efficient way to maximize mass but minimize diffusion time in a cell is to increase its surface area. If you increase the surface area of a cell relatively to its volume‚ then the diffusion time will decrease. Materials: Agar cubes‚ bromothymol blue- pH indicator‚ vinegar‚ ruler‚ spatula‚ beaker
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Subject: Ratio Analysis of Volume Book Distributors Ltd for the Years 2010 And 2011 A. INTRODUCTION The report is based on the company Volume Book Distributors Ltd. Ratio analysis was calculated for Volume Book Distributors Ltd for both the years 2010 and 2011. The ratios comprised of profitability‚ asset utilization and financial stability ratios. The first question consists of Part A‚ which has the Ratio Calculations‚ and Part B which has the Analysis and Interpretation. B. LIMITATIONS
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[Type text] [Type text] [Type text] _An experiment on the effect of surface area to volume ratio on the rate of osmosis of Solanum tuberosum L._ BACKGROUND A cell needs to perform diffusion in order to survive. Substances‚ including water‚ ions‚ and molecules that are required for cellular activities‚ can enter and leave cells by a passive process such as diffusion. Diffusion is random movement of molecules in a net direction from a region of higher concentration to a region of lower concentration
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adaptations shown by xerophytes to reduce water loss A Xerophyte is a type of plant that is well adapted to water. Water loss is something that is very bad for the plants if the ratio of water lost to water taken in is too drastic. The cells may lose their turgidity and may even submit to plasmolysis‚ which will result in the plant wilting and eventually dying. Water loss via transpiration (loss of water vapour from the aerial parts of a plant due to evaporation) is fundamentally inevitable due to
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Volume loss is one of the three aspects of facial aging that make us look older and more tired than we might actually be. When combined with the other two aspects of facial aging (sagging skin and changes to our skin texture)‚ we can eventually become frustrated with our appearance. Volume loss is one of the characteristics of facial aging that you might notice last because it happens slowly‚ over time; however‚ the results can be the most noticeable once they’ve happened. Volume loss‚ also known
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surface area to volume ratio comes into place; the reason why this ratio is so important is because the surface area of a cell essentially affects the rate of the transferring of useful substances (through diffusion and osmosis etc.) in and out of the organism. On the other hand‚ the total volume of the organism also affects the rate of the making of material inside the cell and the ability to hold all of the substances. Whilst organisms are slowly growing and developing day by day‚ the volume of the organism
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Background information: 1) What is diffusion? Movement of a particular type of molecule from an area of high concentration to an area of low concentration. 2) How is diffusion used by living cells? Living cells bring in food‚ water and oxygen‚ and excrete wastes through the process of diffusion 3) List two body systems in vertebrates that are dependent on diffusion Digestive system and respirational system 4) What is meant by the term metabolism the chemical processes that occur within a
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