the solution is hypotonic‚ and water will move from the solution into the cell. If the surrounding solution has a higher concentration of dissolved molecules than the cell‚ the solution is hypertonic. In that case‚ water will move from the cell out into the surrounding solution. An isotonic solution is when the concentration of dissolved molecules is the same inside and outside the cell‚ and there is no net movement of water across the membrane. When cells are placed in a hypertonic solution‚ water
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Aim of the experiment: Finding the water potential of potato. Biological principles: Independent variable: concentration of the solution. Dependent variable: percentage changed in weight of the potato strips. Controlled variable: size of the potato strips‚ it can be controlled by cutting the length of the strips. Procedure: Table 1. Concentration of sucrose solution table Concentration/ M | Sucrose Solution/ ml | Distilled Water/ ml | 0 (Water) | 0 | 10 |
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No. Square. Cube. Sq. Root. CubeRoot. 1 1 1 1.0000000 1.000000 2 4 8 1.4142136 1.259921 3 9 27 1.7320508 1.442250 4 16 64 2.0000000 1.537401 5 25 125 2.2360680 1.709976 6 36 216 2.4494897 1.817121 7 49 343 2.6457513 1.912931 8 64 512 2.8284271 2.000300 9 81 729 3.0000000 2.080084 10 100 1000 3.1622777 2.154435 11 121 1331 3.3166243 2.223930 12 144 1728 3.4641016 2.239429 13 169 2197 3.6055513 2351335 14 196 2744 3.7416574 2.410142 15 225 3375 3.8729833 2.466212 16 256 4096 4. 0000000 2.519842 17
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proposed in this paper‚ which enables scavenging energy from radiofrequency (RF) electromagnetic waves. Compared to common alternative energy sources like solar and wind‚ RF harvesting has the least energy density. The existing state-of-the-art solutions are effective only over narrow frequency ranges‚ are limited in efficiency response‚ and require higher levels of input power. This paper has a twofold contribution. First‚ we propose a dual-stage energy harvesting circuit composed of a seven-stage
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Biology: Osmosis in a Potato Aim To investigate the effect of placing a piece of potato in a given strength of sugar solution. Prediction I predict that‚ as the solution becomes more concentrated the more the cell will shrink‚ as the water‚ of higher concentration inside the potato cells‚ flows down a concentration gradient into the solution‚ which has a lower concentration of water molecules. If we say that the percentage change when the potato is placed in the 1M solution is x%. I predict that
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Lab Report Purpose: Osmosis and diffusion through potato core in different concentration (viable) : The concentration of solution in a solution will affect the movement of water across potato cell membrane Material: Potato core Sucrose solution (0.2‚0.4‚0.6‚0.8‚1.0) Electronic Balane Test tube and rack Scalpel Plastic Weighing tray Cork Borers Method: Day 1 use you cork borers to bore 6 vertical hole on your potato. remove the potato cylinders from
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water either into the potato cells or out of the potato cells. In the 0.400M solution‚ the potato decreased in mass‚ this was due to the reason that the solution was hypertonic. There was a higher concentration of solute and lower concentration of water in the solution than there was in the potato cells. This led the water to travel down its concentration gradient‚ which was from a higher concentration (in the cell) to a lower concentration (in the solution)‚ which meant the potato cells lost water‚
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Osmosis in Potato Conclusion The data we had did not support the definition of Osmosis‚ Osmosis is the diffusion of water through a partially permeable membrane from a region of lower solute concentration to a region of higher solute concentration; the data we collected did not seem to fit into this. The potato chips were suppose to lose more mass in the higher concentrated solution as the water from the potato chip will flow out to the higher concentrated solution as the water inside the potato has a
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is placed between two solutions. In this biological systems context‚ osmosis is the exchange of water between the potato cell and the surrounding medium of varying sucrose concentrated solutions‚ with the plasma membrane being the semi- permeable membrane. Because water molecules have kinetic energy‚ they are constantly moving around in gaseous or liquid form‚ moving randomly from one place or another. The greater the concentration of water molecules in a system or solution‚ the greater the total
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Investigation into how pH levels affect Catalase activity in potato samples – (enzymes) Introduction: The aim of this investigation is to understand and monitor the effects pH levels have on catalase activity within controlled potato samples. Catalase is a type of enzyme that is found widespread among organisms that grow in the presence of oxygen (almost all living things) its specific use is to speed up the decomposition of Hydrogen peroxide (H2O2) within cells. Hydrogen peroxide is a bi-product
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