of solutions and test their pH. Due to materials available pH strips were the only testing tools available. A table is setup to compare the strip color to its pH level. Four known solutions including bleach‚ lemon juice‚ soda‚ and baking soda were used. There was also an unknown solution in which the pH level was used to determine which solution it was. The pH scale is 1-14‚ a pH of 7 is neutral‚ less than 7 is acidic‚ and greater than 7 is acidic. Materials: * pH strips * 20 test tubes
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Lab Report Effect of temperature on enzyme activity I. Purpose: Determine how effect of temperature on enzyme (catalyse) activity (in the liver). II. Materials * Raw liver * Forceps * 50mL 1% hydrogen Peroxide (H * 25mL graduated cylinder * 50mL‚ 400mL beakers * Pureed liver * 5 Filter-paper disks * Paper towels * Timer or stopwatch * Thermometer * Hot plate III. Procedure 1.Gather all necessary materials; start
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pH and Chromatography Lab Report Kevin Rivera Biology Mr. Langley 2C 10/7/13 Introduction In this lab‚ of pH and Chromatography‚ in the pH aspect of the lab we are trying to figure out the pH level of certain chemicals by writing down of known solutions to find the type of unkown solution using pH standards. In the Chromatography‚ we are trying to separate the chemicals using water and a piece of paper. Methodology Materials: Safety Goggles pH indicator & pH indicator key
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courses offered by an educational institution”. In the world of education‚ do extracurricular activities still matter? Well‚ they are definitely a way to escape boredom as they strive to challenge an individual to do something new by overloading or filling up his schedule. And in truth‚ there are some anecdotes on different individuals cracking under pressure due to their participation in these activities. However‚ they cannot compare to the countless rewards that these ventures have to offer. After
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The effects of the school activities to the learning achievement of the selected fourth year students of Liceo de San Pedro Academic Year 2009-2010. School activities are those sponsored by and usually held at school but that are not part of the academic curriculum. They often involve some time commitment outside of the regular school day. A school activity serves as a break of the students from their lessons. School activities include both extracurricular and co-curricular activities. School
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BIOLOGY ASSESSMENT TASK 1 MAINTAINING A BALANCE TASK: OPEN-ENDED INVESTIGATION Our task is to plan‚ choose equipment and perform a first hand investigation to demonstrate the effect of dissolved carbon dioxide on the pH of water. DUE DATE: 21/11/07 CONDUCTOR: Wissam Bardouh EFFECT OF DISSOLVED CARBON DIOXIDE (CO2) ON PH OF WATER Introduction: ((Carbon Dioxide is a greenhouse gas. It is everywhere ranging from our bodies to the atmosphere. Carbon dioxide is produced in living organisms as a result
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Effect of temperature on enzyme activity In this experiment… Independent variable: Temperature of the amylase Dependent variable: Enzyme activity which is measured by the time for disappearance of starch Controlled variables: Volume of amylase; volume of starch solution; concentration of amylase; concentration of starch solution Prediction of results i) At low temperature‚ the rate of amylase activity is very low. ii) At optimum (=best) temperature‚ the rate of amylase activity is the
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homeostasis in the body [2]. Homeostasis is the tendency to maintain the internal environment [2]. Hydrogen peroxide is an oxidizing agent that can be decomposed by catalase [11]‚ the liver is able to decompose hydrogen peroxide enzymatically because it contains catalase [12]. The reaction rate of an enzyme catalysed reaction under the effect of changes in temperature was tested in this experiment. It was hypothesised that the fastest reaction rate would occur a 37 degrees Celsius. Liver and hydrogen
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All economic activities affect the environment in some way whether it is done intentionally or unintentionally. These could be positive or negative effects. Most of the time‚ they are negative. Most activities usually end up harming ecosystems or just polluting the environment. Economic activities can range from mining all the way to farming. This essay will discuss different types of economic activities and how they effect the environment. The first effect on the environment is the over harvesting
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Extracurricular Activities’ Effect on Success Anna Yang Senior Project Paper November 14‚ 2013 “More than half of American teenagers attending school participate in some sort of organized activities” (Wilson 1). Important activities include such as sports‚ clubs‚ organizations‚ dance teams‚ drill teams‚ theater‚ drama club‚ glee club and etc. Students engaged in activities increased their connection with the school‚ and when students get involved in extracurricular activities‚ they
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