sugar in it by adding Benedict’s solution and heating it‚ there would be a color change if a reducing sugar is present‚ or it will remain blue (no reducing sugar). The objective of the Starch test was to test for starch in substances by using Iodine. The iodine will cause a substance to turn to a dark blue color if it is positive for starch. The objective for the Grease Spot Test was to test if the substance had a lipid. A positive reaction would make a translucent grease mark on a brown paper bag
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we are going to use is called amylase. We are going to test this enzyme with starch. By mixing amylase and starch solutions together under different temperature conditions‚ we can record the rate of reaction by taking a sample out and test it with iodine solution to see if there is any remaining starch present. We have to use the enzyme amylase because enzymes will only work on a specific substrate i.e. amylase will work on starch because of its special shape of active site. This is known as the enzymes
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I. Abstract The common organic compounds provide us with nutrients are sugars and starches‚ carbohydrates‚ proteins‚ and lipids. In this lab‚ qualitative tests are performed to identify the presence of organic compounds in food using indicators‚ chemical substances that react in a certain way when a particular substance is present. We put one indicator into the each test tube containing different solutions at a time to see what organic compound is present. The color change in the indicator tells
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folic acid‚ vitamin C‚ vitamin E‚ and magnesium. The vegan diet is more restricted‚ and recommendations differ. Poorly planned vegan diets may be low in vitamin B12‚ calcium‚ omega-3 fatty acids‚ vitamin D‚ iron‚ zinc‚ riboflavin (vitamin B2)‚ and iodine. Vegan food pyramid : http://upload.wikimedia.org/wikipedia/commons/f/f6/Vegan_food_pyramid.svg The Vegan Society and Vegan Outreach recommend that vegans eat foods fortified with B12 or take a supplement. B12 is a bacterial product that
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The thyroid is an important part of the body and it is especially important to teenagers. The thyroid manufactures the hormone that helps control metabolism and growth. To do this the thyroid needs the chemical element called Iodine‚ there is about 50 milligrams of iodine in our body. Thyroid hormones are released from the gland and travel through the bloodstream to your body’s cells. They help control growth and the structure of bones‚ sexual development and many other body functions. Hormones
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monoclonal antibodies into a cancer patient‚ helps the antibodies bind to and destroy the tumor. Curium-244 Used in mining to analyze material excavated from pits…and slurries from drilling operations. Gallium-67 Used in medical diagnosis Iodine-123 Widely used to diagnose thyroid disorders
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Methanolic Extract of Eggplant (Solanum melogena) Peel as a Dye Pigment in Differential Stains Azucena‚ Alexis G. An Official Entry to 2010 Regional Science Fair Cluster 2 Physical Science- Individual Negros Occidental National Science High School January 13‚ 2011 Ma. Melanie P. Romero Research IIB Adviser APPROVAL SHEET The research paper attached hereto‚ entitled‚ “Methanolic Extract of Eggplant (Solanum melogena) Peel as a Dye Pigment in Differential Stains”‚ prepared and submitted
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research and laboratory experiment‚ I agree with the fact that pH 8 is the one when the concentration is highest in the amylase enzyme. If Iodine is added more in the blank one than the concentration of the solution‚ the results would be inaccurate and most likely to be negative numbers. The enzyme activity stops as soon as the Master Mix touches the iodine solution (Goldsworthy 2015). The null hypothesis is rejected based on the results from the laboratory experiment and Reece’s
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helped us to determine the polarity of the unknown solute. In this lab‚ we observed the effects of adding polar liquid solutes to non-polar liquid solvents. Materials used: Safety goggles 3 graduated cylinders ethanol‚C2H5OH solid iodine‚ I2 glycerol‚ C3H5(OH)3 water 10 rubber stoppers 10 test tubes kerosene ammonium chloride‚NH4CL an unknown solute The polarity of a solute or solvent which is present in covalent molecules illustrates which part
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All living things require the input of energy to exist – this energy is used to drive the thousands of biochemical reactions that occur to allow the organism to grow‚ reproduce and sustain life. This energy comes almost always from the Sun‚ in the rst instance – energy from sunlight is captured by photosynthetic organisms (e.g. plants‚ algae‚ certain bacteria) and converted into carbohydrates. These are then broken down by a process called cellular respiration‚ to produce energy-rich molecules (e
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