My lab group studied the effect of PH on reaction rate/ enzyme activity measured by foam height. PH is the measure of the concentration of hydrogen ions in a solution. The higher the hydrogen ion concentration‚ the lower the pH. Every enzyme has an optimal PH‚ meaning they have a very small window in which they are most active. Our enzyme (potato smoothie) had an optimal PH of 7.0-7.5. We know this because we measured the enzyme’s reaction rate by measuring foam height. The largest foam height we
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Designing Activity Systems Research The greatest challenge facing an Activity-Theory-based approached to researching interconnected networks and activity systems is the tension between the necessarily holistic view of “better contextuality” suggested by Kuuti‚ and the need for an appropriate level of analytic abstraction and “generalizable” research results required for the research to have utility across disciplines (as cited in Nardi‚ 1996‚ p. 22; Nardi‚ 1996‚ p.70). This tension can
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Human consumption: and its effect on the environment Submitted to Professor Liam Kilmurray For the course Techniques‚ cultures and Environments {SOC/ANT 2113A} University of Ottawa March 22nd‚ 2015 The environment is a very important in human existence as it is basically all that surrounds us. Our environment is a complex phenomenon
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ABSTRACT Care for the environment is often portrayed as detrimental to economic growth. For too long economics and environment have seemed like players on rival teams. There is a long-standing debate on the relationship between economic development and environmental quality. Sustainable development emphasizes the need for integration of economics and environment‚ as well as promoting intra and intergenerational equity. From a sustainable development viewpoint there has been a growing concern that
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Marcus Watson October 23‚ 2010 Environmental Biology L/LB BIO 1110 Harmful Effects of Nuclear Energy on Human Health and the Environment Over the past decades‚ scientists‚ conservationists and environmentalists alike have been searching for clean‚ renewable sources of energy. As we enter move further into the Common Era‚ the human population will continue to grow exponentially; therefore‚ the demand for resources will grow as well. Energy is the primary resource needed to sustain a human
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Name: Cassidy Lessig Activity 1 The Muscle Twitch and the Latent Period 1. 1. Define the terms skeletal muscle fiber‚ motor unit‚ skeletal muscle twitch‚ electrical stimulus‚ and latent period 2. What .is the role of acetylcholine in a skeletal muscle contraction? Skeletal muscle fiber-Skeletal muscle fibers are the individual cells that are bound together in fascicles. Many fascicles are bound together to make a muscle Motor unit-A motor unit consists of a motor neuron and all of the muscle
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Enzyme Catalase Activity in Reaction with the Substrate Hydrogen Peroxide Abstract We performed these experiments to observe the effects of enzymes on the rate of reactions. We tested and compared the activity of the enzyme catalase on the substrate H2O2 in various states and percentages‚ and observed the absorption values of the enzyme-substrate relationship at different concentrations. Our results show that the more substrate available‚ the quicker the reaction will happen except in one test
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Pollution is the introduction of contaminants into a natural environment that causes instability‚ disorder‚ harm or discomfort to the ecosystem i.e. physical systems or living organisms. Pollution can take the form of chemical substances or energy‚ such as noise‚ heat‚ or light. Pollutants‚ the elements of pollution‚ can be foreign substances or energies‚ or naturally occurring; when naturally occurring‚ they are considered contaminants when they exceed natural levels. Pollution is often classed
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I certify that no unauthorized assistance has been received or given in the completion of this work. DP Schoenberg’s Atonal Period: Influences and Effects Daniel Pureco Music 62H Professor Stefan Litwin 16 April 2015 Daniel Pureco Professor Stefan Litwin Music 62H 16 April 2015 Schoenberg’s Atonal Period: Influences and Effects At the start of the twentieth century‚ as the Romantic era had just drawn to a close‚ it started becoming apparent to many composers that the traditional
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The article discloses research on how the Supervisor Feedback Environment (SFE) of an organization affects the Organizational Citizenship Behavior (OCB) or‚ committed performance‚ of its members. It explains a new study that links the SFE indirectly to the OCB through positive and/or negative affective perceptions of Role Stressors‚ Job Burnout‚ Organizational Commitment‚ and Person-Organization Fit. The study was performed in Taiwan on 380 employed business-management students and their actual
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