Ben Zaré 9MK Biology Investigation - Osmosis in Potato Cells 9/7/04 Section 1 Planning Aim What is the aim of your experiment? What do you want to find out? The aim of this experiment is to investigate how potato tissue changes when placed in sucrose solution of different concentrations. Therefore‚ I want to find out if and how osmosis differs‚ when the concentration is changed. Variables What is the variable you are going to change in the experiment?
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Osmosis using potato cores and sucrose solution 1.0 Abstract This experiment’s ultimate goal is to find the water potential of the potato cell. This was achieved through placing potato cores in different concentrations of sucrose (0.2%‚ 0.4%‚ 0.6%‚ 0.8%‚ 1.0%‚ 2.0%‚ 3.0% and 4.0%) solution and to observe how much water was gained or lost through osmosis to reach a prediction of the concentration within the potato cell. The results displayed that the concentration of sucrose within the potato cell is
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Bottled Water vs. Tap Water In today’s society drinking water from a plastic bottle has become the norm‚ but just a few decades ago this action was not the case. During the late 70’s a French company named Perrier introduced bottled water to America and convinced people of the fact that drinking water from a bottle would make people look cool‚ so they advertised a new fashion of consuming this precious liquid. Companies like Coca-Cola and Pepsico saw the opportunity to start a division of bottled
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Carrots are one of the ten most economically important vegetable crops in the world(Simon et.al|2008).In 2014‚ world production of carrots (combined with turnips) was 38.8 million tonnes. Carrot is a nutritious vegetable and contains a good amount of vitamin K and vitamin B6. In this report‚ Life Cycle Assessment of Carrots is conducted‚ which involves all stages from cradle-to-gate. A Life Cycle Assessment report according to the ISO 14044 standard comprises of four major elements: 1) Goal and
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of a Potato Mishal Hasan Abstract Students in Biology find it difficult to understand the concept of tonicity and osmolarity in a real time situation. In this investigation‚ several concentrations of sucrose were used to determine the osmolarity of a potato. It was found that the concentration of sucrose was close to 3.6 in the potato used showing that it was isotonic. Anything above caused the potato to gain weight showing that it was a hypotonic solution and anything below caused the potato to lose
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Osmosis is the movement of water from an area of high concentration to an area of low concentration across a semi permeable membrane. An osmotic system is established when a semi-permeable membrane 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
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The “Couch Potato” Lifestyle “Couch potato”‚ a slang term to describe a person who spends most of the time sitting or lying on a couch. However‚ sedentary lifestyle is another term which commonly used as a medical term to describe a lifestyle with irregular psychical activities or exercise. People intend to spend more time sitting‚ surfing the internet‚ working on a computer‚ watching television‚ and other activities that do not require much psychical movement or activities. Hence‚ this lifestyle
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carrying out photosynthesis; they absorb certain minerals and sugars so to use as a source of energy and eradicate wastes in order to maintain specific requirements for survival. Large amounts of water are absorbed by root hairs and are then distributed across the cells of plants by the process of osmosis; water being essential to life‚ assists cells in executing crucial chemical processes. Molecules travel by two means; active transport or passive transport. Active transport is the movement of a substance
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in grams) of potato cores placed in them overnight (approximately 10 hours)? 2. Hypothesis Alternative hypothesis: As the concentration of sodium chloride in the solution increases‚ the mass of the potato cores will decrease. If the solution they are in has a lower water potential than the potato cores‚ there will be net movement of water out of the potato cores. If the solution has a higher water potential than the potato cores‚ there will be net movement of water into the potato pieces. Therefore
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Osmosis in Potato Tubers Andrew Dickson Background When a plant cell is bathed in a solution of the same concentration (isotonic) as its intracellular environment‚ its mass and volume remain the same. This is because water enters and leaves the cells at the same rate. There is no net loss or gain of water by osmosis. Samples of cells can be placed in a range of solutions of different concentration. The cells will gain water by osmosis when placed in solutions which are more dilute (hypotonic)
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