Potato Catalysis Lab Pre-Lab Assignment Background Information: An enzyme is catalytic protein. It is the most important type of molecule found in living cells. Cells would not be able to function without enzymes. Enzymes speed up or slow down chemical reactions of the cells. It is usually easy to identify the names of enzymes because they end in -ase. The enzyme that acts upon the substrate hydrogen peroxide is usually called catalase. This enzyme is found in both plants and animals
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Abstract The experiment was carried out to investigate at which point the potato has reached its isotonic environment. From the results‚ when the concentration increase to 0.3M‚ the mass of the potato slices decreased by -3.26%. We can conclude we see that as we increased the sucrose concentration it was a decrease in the percent change. Introduction All cells have membranes that are selectively permeable. In other words‚ they allow certain things in and certain substances are not allowed to
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Melting Point (4 points) Conductivity (4 points) Part II Conclusion Answer the following questions in your own words‚ using complete sentences. Based on your observations in the lab‚ categorize each unidentified compound as ionic or covalent. Explain in one or two sentences why you categorized the compounds the way that you did. (5 points)A covalent B Covalent C ionic D Covalent Explain‚ in your own words‚ the differences between ionic and covalent bonding that account for the differences in their
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In the early 1800s life in Ireland wasn’t easy‚ Irish citizens got by day to day by farming and relying on the potato. The potato was their main source of food and money. With out the potato the Irish would have nothing. No one was prepared for what was about to happen in 1845‚ the beginning of the Great Irish Potato Famine. The Irish Potato Famine was the worst tragedy in the history of Ireland. The outcome of the famine would result in hundreds of thousands dead‚ an failure of the economy
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NAME: IZYAN NABILA BINTI AHMAD `AZAM CLASS: M13A DATE: 21.08.2013 TITLE: Transport across membrane OBJECTIVES: To investigate the effect of concentration of blackcurrant squash on osmosis in chipped potatoes. INTRODUCTION: In biology‚ osmosis is defined as the diffusion of solvent molecules (usually water molecules) across a semi-permeable membrane from a region of lower solute concentration to a region of higher solute concentration.
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Osmosis of a Potato cell. Hypothesis is that the potato in saltwater is going to show that it will break down the cells of the potato. Osmosis is the diffusion of a solvent through a semi-permeable membrane‚ from a solution of low solute concentration to a solution with high solute concentration‚ up a solute concentration gradient. Net movement of solvent is from the less-concentrated to the more-concentreated.‚ which tends to redure the difference in concentrations. This effect can be countered
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Diamond cut Diamond A merchant‚ after many years of poverty and hard work‚ moved to a distant region and grew rich. He decided to go home. A man told him that his road was beset by thieves‚ and the merchant left his box of jewels with him until he could get men of his own family to accompany him. When he returned‚ the man denied that it had ever happened‚ and threw him out of the shop. Koosby Ram saw him sitting on the road‚ and asked him what had happened. Then he told him to go back the next
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1. (a) Indications -The stenopaic slit refraction is useful for confirming the results of other refraction techniques for patients with irregular astigmatism or reduced visual acuity. - It is helpful for patients who have difficulty understanding the complex instructions associated with other subjective techniques. -It is important to note that‚ like the pinhole‚ the stenopaic slit may be used diagnostically to determine a patient’s potential visual acuity. -The astigmatism present in the patient’s
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Have you ever wondered why is there so much "empty space" in space if there are no other intelligent beings we can communicate with? If this would be true‚ the whole universe would be a complete waste since humans will never be able to explore not one percent of it. Also‚ there is so much evidence about aliens‚ so many sightings and encounters that it is very hard to disprove them all. If the theory of evolution is taken into consideration‚ the possibilities of intelligent life forming only on Earth
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This was conducted through four different experiments. The first tested the effect of temperature on enzyme activity. The independent variable in the first experiment was the temperature of the solution of pH 7 buffer‚ potato juice‚ and the enzyme. The independent variable for the second experiment was the pH of the phosphate buffer. The independent variable for the third experiment was the enzyme concentration of the solution‚ and finally the independent variable of the
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