The effect of increasing substrate concentration on rate of an enzyme reaction. Enzymes are biological catalysts that lower a reactions activation energy making possible many of the reactions needed for life to exist. Enzymes have a high specificity which have been explained by many theories such as Fischer’s lock and key. Currently the most widely accepted theory is the induced fit hypothesis proposed by Koshland in 1958. This hypothesis solves some of the problems with the Lock and key theory
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Effect of osmosis rate on different surface areas‚ depending on different types of water solution An investigation showing the effect of surface area on osmosis rate‚ including some different types of water concentration. Osmosis is a type of passive (not requiring energy) transport of water molecules across partially permeable membrane‚ from an area of high water concentration into area of low water concentration. But how does surface area affect rate of osmosis? Surface area plays important
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Design Experiment: Enzyme Inhibitors. Research question: What is the effect of adding lead nitrate solution on the activity of amylase enzyme? Aim: To test the effect of adding nitrate solution on the activity of amylase. Background Information: Inhibitors are molecules which repress or prevent another molecule from engaging in a reaction. They are substances that attach themselves onto an enzyme and reduce or prevent the enzyme’s ability to catalyse reactions. Competitive Inhibitors are inhibitors
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Experiment to Investigate Osmosis in Potatoes The aim of this experiment is to investigate the movement of water in and out of plant cells. The cells chosen for study will be taken from potato tubers. Firstly I will explain what osmosis is. Osmosis is the passage of water from a region of high water concentration through a semi permeable membrane to a region of low water concentration. This definition contains three important statements: a) It is the passage of water through a semi permeable membrane
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When the Constitution of the United States was first drafted‚ life was simply different. Not as many people were as educated as they are today‚ and politicians had to be the voices of the people; the big people and the small people. Farmers needed just as much say in the government as factory owners‚ and politicians gave them that opportunity. Over time‚ society changed. We industrialized. Technology‚ education‚ labor forces‚ and every other aspect of America advanced. With these changes‚ there had
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The overall tone of the book is much different than that of The Sun Also Rises. The characters in the book are propelled by outside forces‚ in this case WWI‚ where the characters in SAR seemed to have no direction. Frederick’s actions are determined by his position until he deserts the army. Floating down the river with barely a hold on a piece of wood his life‚ he abandons everything except Catherine and lets the river take him to a new life that becomes increasing difficult to understand. <br><br>The
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What would you do if you saw someone harming an animal? Good morning/ afternoon. If you hadn’t already gathered with the “smack in the face” question I just asked I am here today to talk to you about animal abuse and animal cruelty. Imagine if you were the one being tested on‚ imagine your skin being torn off whilst alive‚ imagine your arms and legs being broken and ripped off while you were alive‚ imagine being burnt alive‚ imagine even being killed just to satisfy other species. Doesn’t sound nice
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Animal Farm is an allegorical and dystopian novel by George Orwell‚ which was published in the year 1945. It is a story about farm animals who rebel against the farmer Mr. Jones‚ who treated them cruelly‚ they were spurred into rebellion by Major (an old boar) who gave a speech before he died as how the humans were parasites and why they should be defeated. Later on two pigs‚ Napoleon and Snowball lead the rebellion against the farmer and they consequently won as the farmer drove away‚ and
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Negative feedback Essay Homeostasis of Animals and Plants Many animals‚ including humans‚ can regulate their body temperature through a process called negative feedback. The temperature within the body is regulated to be maintained within a certain range. Animals capable of this type of homeostasis are deemed homeotherms (1). Temperature is adjusted by receptors that detect temperature fluctuations called thermoreceptors‚ which are found in the hypothalamus-a portion of the brain. These receptors
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What Rights Do Animals Have? Week 8 ENGL 135 Ayano Moon Dr: Cynthia Hallett DeVry University What Rights Do Animals Have? In October 2011‚ dozens of exotic animals such as lions and rare tigers were released into human population by local private owner‚ Terry Thompson. This act not only put hundreds of the local populated area at very alarming high risk of extreme danger‚ it also led to “49 animals were slaughtered‚ including 18 Bengal tigers‚ 17 lions‚ six black bears‚ a pair of grizzlies
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