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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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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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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conditions of communist countries. The static number of deaths due to communism is approximately 94 million. Compared to the deaths of the holocaust which would stand at 11 million. 94 million is a to high number‚ when dealing with innocent lives. The Potato Eaters‚ a painting by Vincent Van Gogh‚ a novel by George Orwell published in 1954‚ and “Dog‚” a 1977 song performed by Pink Floyd and written by David Gilmour explore the idea that communists countries have harsh conditions that will be apart of
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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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How to solve a Rubik’s cube The purpose of this report is to inform the audience on how to solve a Rubik’s cube in three simple steps. Solving a Rubik’s cube can be difficult; however by solving one layer at a time‚ and knowing the correct algorithm to use for each desired move‚ makes solving a Rubik’s cube easier than it looks. Introduction Invented by mechanics in 1974. There are over 43 quintillion possible combinations for solving a Rubik’s cube. That is 43‚252‚003‚274‚489‚856‚000. (information-facts)
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My 48 hour ice cube addiction simulation turned out to be very different than what i had expected. I don’t put an ice cubes in my water cup at all. So my ice maker in the freezer is always empty. So I have to keep the ice maker full of ice cubes to use it in my addiction simulation. My first hour in the 48 hours simulation I was trying to fill my water bottle with ice cubes. I spilled some of ice cubes on the floor. My dad got suspicious when I filled a water bottle full of ice cubes‚ because I’m not
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expenditure of energy‚ and the support of a carrier protein. Passive transport‚ however‚ does not require energy but occurs spontaneously instead. It is a form of transport by which molecules move along a concentration gradient‚ from an area of higher concentration to an area of lower concentration. Passive transport includes osmosis and facilitates diffusion. Osmosis is a special case of diffusion; it describes the passage of a solvent from a weaker solution‚ where there is higher water potential‚ to
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| |Preview/outline of the main |I will explain three basic things which include how to go about finding the right materials‚ how to melt| |parts |the wax‚ and how to make a molded ice-cube candle. | |Linking ideas-sequencing |Let’s start by doing the most important thing‚ which is to find all of the materials‚ and tools needed | | |to
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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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