Lab Report An enzyme is a protein that speeds up the rates of chemical reactions. They recognize‚ bind‚ and change specific reactants. They do not change so they can catalyze the same reaction again and again. Activation energy is the amount of energy needed in order to begin a chemical reaction. A Catalyst is a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change. Catalysts are substances or a substance that configures another substance
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Microbiology-2460 Lab-003 March 31‚2008 Lab Report-Escherichia coli Abstract The purpose for this lab report was to identify and inform of an unknown bacteria that has been causing a patient to have lower abdominal and pelvic pain. To obtain the identification of this unknown bacterium‚ several biochemical tests needed to be performed in order to prescribe the correct medication to treat and cure the symptoms. Introduction In a lab today‚ I am to identify an unknown bacterium that is
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overall impact in this excitement a little on osmosis. Osmosis takes place when two solutions of different concentrations are separated by a semi-permeable membrane in which the solvent can pass through but not the solute. In our experiment‚ we used a sucrose solution that will be a hypotonic concentration of solute. This tells us that the solution has a lower concentration of water than does the cells. Therefore‚ due to osmosis‚ the cells will gain water weight also proven in the experiment given. If
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concentration (increase in osmolarity) which will cause an increase in water reabsorption (decrease in osmolarity). ADH most important function is to conserve the fluid volume of your body by reducing the amount of water passed out in the urine. When there is a decrease in serum sodium levels (decrease in osmolarity) the ACTH causes the adrenal cortex to release aldosterone‚ thereby increasing sodium reabsorption in the distal convoluted tubules of the kidney (increasing osmolarity). Aldosterone also
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Pre-Feasibility Study Potato Flakes & Flour 1 TABLE OF CONTENTS Page 1. 2. 3. 4. 5. 6. 7 8. 9. 10. 11. Objective Products Process Global Export Markets Global Import Markets Local Market Target Markets Raw Material Plant & Equipments Conclusion Role of PAMCO 3 3 3 4 5 6 7 8 9 10 10 2 OBJECTIVE: • To provide marketable and value added dehydrated potato products from raw potatoes for the use of food processing industry in Pakistan and abroad as well as end products for the consumer
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Christine Otieno Estimating Osmolarity of plant Cells(potato and celery)by percentage change in weight Using different sucrose concentrations Introduction The purpose of this experiment was to estimate Osmolality of plants cells i.e. Potato and celery by converting the observed change of weight in different sucrose concentrations. The hypothesis assumes that the solute concentration of the plant samples would be indirectly proportional to the weight; there would be decrease
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the same for potato cores placed in varying concentrations of solutes of NaCl‚ glucose‚ and sucrose. This experiment was designed to test these predictions and compare them to data gathered course wide. We found that the mean water potentials were all within 0.26 bars of each other‚ and that the zero weight change osmolalities were all within 0.035 mols of each other. This supported Van’t Hoff’s predictions that water potentials and osmolalities would be the same. We had to collect potato core samples
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______ 1. Background: Potato is a starchy‚ tuberous crop from the perennial “Solanum tuberosum” of the Solanaceae family (also known as the nightshades). It originated from the area of present-day southern Peru and it’s now grown worldwide. Potatoes were first introduced outside the Andes region four centuries ago‚ and have become an integral part of much of the world ’s cuisine. It is the world ’s fourth-largest food crop‚ following rice‚ wheat‚ and maize. Wild potato species occur throughout
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small particles caused by the bombardment of the particles by millions of water molecule. This movement will continue indefinitely as long as there is water. My prediction for this lab is the solution of the water is hypertonic meaning there is a higher concentration of solutes outside of the cell. To test my prediction my lab partners conducted the Brownian movement. Materials: Bon Ami scouring powder‚ carmine red and Indian ink Microscope slides and cover slip Dropper bottles with distilled water
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each bag and determine its mass. Record all data in its appropriate table. Lab 1C - using the potato core borer‚ obtain 24 cylindrical slices of potato‚ four for each cup. Determine the mass of the four cylinders. Immerse four cylinders into each of the six beakers or cups. Let stand overnight. After time is up‚ remove the cores from the sucrose solutions and mass them. Record all data in its appropriate table. Lab 1D - Using the paper‚ pencil‚ and calculator collected‚ determine solute potentials
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