Enzymes are catalytic proteins that selectively speed up chemical reactions without by consumed by the reaction itself (1). Enzyme activity is significantly affected by factors such as temperature‚ substrate concentration‚ enzyme concentration and pH. Enzymes are highly specific and only catalyse one specific chemical reaction‚ speeding up the reaction by lowering the activation energy‚ the energy required to start a chemical reaction (2). At high temperatures and with various mechanical forces or
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Osmosis investigation Aim: To investigate how sugar concentration affects the mass or size of a potato and find out the sugar solution. Introduction: Osmosis is the movement of water molecules across a partially permeable membrane form a region of high water concentration to a region of low water concentration until the concentration on both sides is equal. This means that osmosis is like diffusion involving water molecules. Osmosis occurs across a partially permeable membrane‚ with holes
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X00703568 Writing 121‚ Group ____ November 26‚ 2013 Women as Ornaments Women have spent decades trying to become men’s equal in the United States‚ instead of being treated as objects. Now‚ the emphasis that our society has placed on appearance and body image has women yearning to be the prettiest‚ sexiest ‘objects’ around. As women look around in the world today‚ it is hard not to see advertisements or videos that suggest ‘beauty is everything’. The media is constantly turning attention onto
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My results and the graph indicate that as you add the caffeine to the daphnia‚ the eart rate of the daphnia increases for example the daphnia’s heartbeat is 120 without caffeine‚ however when caffeine is added it is increased to 168. My graph shows a positive correlation and the error bars are also very small which shows that the results have a small range which suggests that my results are accurate and reliable. I think that the experiment was conducted well however there may be some ethical issues
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is used in many dramas to real the inner thoughts of a character. In soliloquies‚ the character reveals his or her inner thoughts about a particular person or event without “acknowledging” the presence of any other character. In Hamlet‚ Shakespeare uses soliloquies to provide reader with the understanding of Hamlet’s character who is the protagonist. Hamlet is a play about a young prince who returns to Denmark from his studies after his father’s death. Hamlet sees his mother‚ the queen marry his father’s
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My SRP is determining if the colour of ice affects its melting rate. Ice melts by taking in energy from its surroundings to form heat. This makes the molecules in the ice cube vibrate. As the overall vibration increases‚ the water molecules split from each other turning the ice from a frozen state to a liquid state. Heat can be absorbs in two different ways‚ through direct contact with a hot surface or through radiation of a hot surface nearby. Radiant heat can be contributed by sunlight‚ fires and
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In the experiment‚ as the size of the cube decreased‚ the absorption rate increased‚ showing that the smaller cells absorbed more sodium hydroxide than bigger cells. The smaller cells were able to absorb more sodium hydroxide as they have a bigger surface area to volume ratio causing them to act more efficiently than the bigger cells. The smallest cell had a ratio of 1:12 while the biggest cell had a ratio of 1:2‚ leaving a gap of 5:12 causing the bigger cell to act less efficient in absorbing the
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Gabriela Toledo 2/9/15 Texts and Contexts Essay 1: The Tempest Clothing and Appearance: Connotations in Shakespeare’s “The Tempest” Shakespeare’s The Tempest was written between the years 1610 and 1611‚ and was known as one of only two plays that Shakespeare wrote as an entirely original piece. It was performed for the second time in 1612 to honor the wedding of the daughter of King James. Given the fact that it was written as an original‚ there is possibility that Shakespeare may have
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1. Examine the underlying historical and economic reasons as to why the quest for alternatives to incarcerating offenders in jails and prisons. 2. Describe three alternatives to incarceration that juvenile courts currently use. 3. Discuss the significant and societal and individual benefits of imposing sanctions or punishments that do not involve removing an offender from his/her family or community. Strayer University Historical and Economic reasons In the early 1920’s and 1930’s instead of placing
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This experiment focuses on the effect of light intensity on the rate of photosynthesis. In simple terms this refers to how the production rate of the products of photosynthesis (oxygen and glucose) will be affected by a light source at different distances. The hypothesis states that “If there is a higher light intensity‚ then more oxygen and glucose molecules will be produced‚ and the rate of photosynthesis will increase.” This hypothesis was accepted. This was determined by counting the number of
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