Aim: To find the effect of temperature on enzymes‚ using a potato as a catalyst. The source of catalase is in the potato cells. 2H2O2 → O2 + H2O Planning: Introduction: An Enzyme is any one of many specialised organic substances‚ composed of polymers of amino acids‚ that act as catalysts to regulate the speed of the many chemical reactions involved in the metabolism of living organisms Enzymes are classified into several broad categories‚ such as hydrolytic‚ oxidising‚ and reducing‚ depending
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panelists linked cheating to the social pressure put on students to prize high grades over education and other values‚ including creativity and imagination. Pressure by parents and schools to achieve top scores has created stress levels among students—beginning as early as elementary school—that are so high that some educators regard it as a health epidemic‚ said Denise Clark Pope‚ a lecturer in the School of Education and the author of Doing School: How We Are Creating a Generation of Stressed
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1.6 Blood Pressure Blood pressure is the main factor in sustaining blood flow through tissues. The force applied to the arterial walls as the heart pumps blood throughout the circulatory system defines the physiological meaning of blood pressure (Bojanov‚ 2009). Blood pressure is determined by the force‚ heartbeat rate‚ and resistance to blood flow through vessels. Cyclic changes in arterial blood pressure are partially attributed to the rhythmic contractions in the left ventricle (Iaizzo‚ 2009)
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book. The classwork will still be fresh in your mind so at exam time you merely have to take the notebook home from school. Write down the key points you learned from each lesson onto a cue card. This helps your mind to retain the day’s important facts. On the weekends look over the cue cards. Get your parents or friends to quiz you on them. Create Good Study Habits for Exams Step 1.jpg Ad Create Good Study Habits for Exams Step 2.jpg 2Record your notes on a digital voice recorder or another
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the Ukraine Crisis Crimea‚ located in the northern coast of the Black Sea‚ is a ₁autonomous republic within the state of Ukraine. The eastern shore of Crimea touches some land of Russia. Crimea was first part of the Russian empire. But then how is Crimea part of Ukraine? Crimea only became part of Ukraine when soviet leader Nikita Khrushchev gave the peninsula to his native land in 1954. In 1991‚ Crimea finally became an independent Ukraine. Despite that nearly 60 % of the population in Ukraine
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Chapter 4: Paying Attention Selective attention – usually focus our attention on one or a few tasks or events at any given time Extensive practice tasks becoming so easy and effortless performing them requires no attn. – automatic Attention is freed up for a person to do another task simultaneously with the automatic one – divided attention Find your keys on your desk Spatial attention – attn. can be focused on objects and events of interest in our enviro in order to aid in our ability to recognize
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determined to limit the military and political expansion of Soviet power in order to prevent it from challenging American global economic and political dominance. In 1945 and 1946‚ there were increasing debates within the United States government over how to deal with the Soviet Union. Should the United States now see the Soviets as an "evil empire" that threatened to undermine the peace and freedom of an American-led "free world"? The influential 1946 memo to President Truman said that the Soviets were
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According to the Tate Gallery’s exposition (1979) Cubism has remained the most important and influential movement of the 20th century‚ notwithstanding the movement’s short duration. According to Read (1994) the major period for Cubism was from 1907 to 1914‚ with Picasso and Braque as the main originators of the movement. The rationale for the Tate’s statement is given as “the artists associated with [Cubism] took some of the most decisive steps towards abstraction”‚ and this extreme development
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How to get the best results from VoIP In this project‚ the discussion will be on how to get the best results from VoIP. Firstly‚ use the four basic rules in selecting the right Codec. Rule one; using band with 64k or less one must use G.729‚ G. in choosing 723 or alternative one determines the right Codec to use for VoIP? In making the choice of what codec to use in VoIP‚ low bandwidth codec. Rule two; use the best codec possible by decreasing the Mean Opinion Score. Rule three; Use of more
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In 1852‚ Henry Wells and William Fargo established a company that has impacted American in almost all the right ways. Over the past few months‚ Wells Fargo reputation has been tanking because of the millions of fake accounts the employees have been making to reach their sales goals. On March 18‚ 1852‚ Henry Wells‚ William Fargo and many others joined together to form a joint stock company‚ that provided banking and express services in California. Wells Fargo and Company’s Express granted financial
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