The potato’s introduction into Europe proves to be one of the most significant examples of a foreign food crop being able to extensively affect the lives of a an Old World Population. Before the assimilation of the potato crop into the majority of Europe’s agricultural landscape‚ peasant populations constantly faced famines while current food sources provided little nutritional value and were not efficient sources of energy. As Europe adopted the brown tuber‚ people were provided with a far more
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INTRODUCTION The enzyme catalase converts hydrogen peroxide (H2O2) to water and O2. The evolution of O2 causes bubbling. Thus‚ catalase-positive organisms that are mixed into hydrogen peroxide will cause bubbling (catalase-negative organisms will not). This test is good for distinguishing between Gram-positive cocci in chains (catalase negative) versus Gram-positive cocci in clusters (catalase positive). The coagulase test is used to differentiate Staphylococcus aureus from coagulase-negative
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The Potato Epidemic One fine morning in the Kingdom of Sandwiches‚ SandwichKing and Sandwich‚ his pet‚ were going for a walk. Suddenly‚ green potatoes‚ “The SWAT‚” came out of nowhere and asked a million questions about mashed potatoes? Then suddenly‚ as fast as they had appeared‚ they disappeared. “Who was that?” asked SandwichKing‚ “And what do they want with mashed potatoes? Whatever.” Then SandwichKing and Sandwich continued on their walk. The next day‚ when SandwichKing looked out his window
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Potato Batteries: Veggie power! Data and Analysis Background The battery was invented around 1800 by Alessandro Volta in Italy. It has become an indispensable part of modern life. Why are batteries so useful? Because they convert chemical energy into electrical energy. You can use this electrical energy to light a flashlight‚ to start a car‚ or to listen to your favorite music. We made a simple battery out of a potato by placing in it a zinc strip and a copper strip. At the zinc strip‚ the
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Study: CATALASE FlowChart Purpose: Measure the rate of enzyme activity in different conditions Procedure: A. Extraction of Catalase 1. Peel potato 2. Cut into cubes 3. Mass 50g 4. Measure out 50ml of cold distilled water in blender 5. Add crushed ice into blender (small amount) 6. Add the potato cubes into the blender 7. Turn on blender on high for 30 seconds 8. Prepare an ice bath - FROM THIS POINT ON PREPERATION MUST BE CARRIED OUT IN AN ICE BATH – 9. Filter potato extract
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I A. The autumn of 1856 was a time of great starvation for Ireland. B. Many people were affected by the Potato Famine because the potato was their staple crop. C. The population during the famine dropped from 8.1 million to 6.8 million. D. Why was the famine so severe even though it was during the modern age? Thesis: The impact of the Irish Potato Famine would not have been as devastating if England hadn’t controlled Ireland by foreclosing thriving industries‚ passing
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The Growth in Potato Production and Inception of Secondary Potato Markets in India Case Study: McCain India Limited Potatoes are a staple food crop in most developed and developing nations. The original habitat of South America was discovered by Europeans when Columbus landed on Latin American soil. However‚ the potato was adapted as a field crop only during the late 16th and early 17th century1. Global
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By: Eugenia Collier Sweet Potato Pie Eugenia W. Collier is an AfricanAmerican writer and critic best known for her 1969 short story "Marigolds"‚ which won the Gwendolyn Brooks Prize for Fiction Award. Born: 1928‚ Baltimore‚ Maryland‚ United States. Books: Breeder and Other Stories. Education: University of College Park‚ Columbia Howard University. Maryland‚ University‚ Building Backgrou Sharecropping nd This was a farming system practiced in the South in years between the Civil War and
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As I’m sitting there‚ watching a hot potato – a literal hot potato‚ fly towards me‚ I’m wondering what I got myself into. Rewind a couple of days and I’m in school talking to the new girl named Jocelyn. She wore converse and had these cool long side bangs that everyone in the eighth grade was jealous of and had come from some far off place called Falls City. As the new kid with the cool hair‚ everyone was competing to lure her into their posses’. I‚ a typically quiet‚ reserved person‚ tended to stick
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Biology Aim: My objective is to plan and conduct an experiment from which I should be able to draw a firm conclusion that will either prove or disprove any predictions I make. This essay aims to assess and investigate the effect of various solution concentrations on the activity of osmosis in plant tissue. Background scientific theory: Plants exchange gases (CO2 and O2) in maintaining vital respiratory
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