Effects of pH on amylase activity Introduction: Amylase is an enzyme that is in human’s saliva as well as the pancreas. Enzymes are biological catalysts that speed up a chemical reaction. They break down complex molecules into simple ones. In this case‚ amylase converts starches (complex molecule) into simple sugars. That is why foods like potatoes for example‚ may taste sweet to us‚ because they contain starch. The optimum pH for pancreatic amylase is the pH of 7. In the experiment I have used
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| Case Study/Reaction Paper | The Stanford Prison Experiment | | Reviewing and Analyzing: The Stanford Prison Experiment The Stanford Prison Experiment was conducted at Stanford University in California from August 14 to August 20‚ 1971. Led by psychology professor Philip Zimbardo‚ twenty-four male students whom were chosen out of 75‚ were randomly assigned roles of prisoners and guards‚ for an investigation into the causes of conflict between military guards and prisoners. According
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Topic: Millikan Oil-Drop Experiment The Millikan Oil-Drop experiment was the first experiment to determine the charge of an electron. In 1909‚ Robert Millikan ultimately came up with a way to determine this charge through finding the minute electric charge on a droplet from an oil mist. Basically‚ Millikan started with an enclosed chamber that had two flat plates inside‚ one with a positive charge and one with a negative charge. The portion is split up by the positively charged plate so at the beginning
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Effects of pH on fungal amylase activity BI 211 November 25‚ 2011 Introduction In recent years‚ the uses of microorganisms have become a huge importance to industry and sparked a large interest into the exploration of enzyme activity in microorganisms. Amylase is one of the most widely used enzyme required for the preparation of fermented foods. Apart from food and starch industries‚ in which demand for them is increasing continuously‚ amylase is also used in various
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Examine the problems some sociologists may face when using different kinds of experiments in their research (20 Marks) To have control over variables and the environment they are researching‚ sociologists often use laboratory experiments in research. Lab experiments are used to test a hypothesis in a controlled environment‚ by altering an independent variable to see the dependant variable being tested changes. Positivists favour this method of research as it is a more scientific approach to research
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The effect temperature has on the activity of the enzyme α- amylase. Introduction Enzymes are a biological catalysts‚ which means that they speed up the chemical reactions in living organisms. Almost all of enzymes are energized protein molecules that catalyse and regulate nearly all biochemical reactions that occur within the human body. The reason in which enzymes are sensitive to heat‚ pH and heavy metal ions is because they are made up of proteins. The food we eat is turned into energy by enzymes
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Introduction: The purpose of this lab was to check the time needed for salivary amylase and phosphorylase to produce a negative result and how different concentrations affected those times. Enzymes are biological catalysts that can cause a specific chemical change in any part of the body (Walsh‚ 2002). Many of the reactions that take place within a cell would normally take place at temperatures substantially higher than those present inside a cell (Alberts et al.‚ 2010). Because of this‚ these chemical
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Solomon Asch‚ a social psychologist had a hypothesis and he decided to test an experiment based on his hypothesis. Asch’s hypothesis theory was... Would people still conform to the group if the group opinion was clearly wrong? Well‚ to test his theory he chose a simple and objective task with an obvious answer. A group of people sat at a table and viewed a series of cards‚ on one side of each of the card was a standard line and on the other side were three comparison lines. Now‚ the individual’s
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Critique Revisiting the Stanford Prison Experiment: a Lesson in the Power of Situation January 17‚ 2012 � This is a critique of an article published in Chronicle of Higher Education‚ (v53 n30 pB6 Mar. 30‚ 2007) on "Revisiting the Stanford Prison Experiment: a Lesson in the Power of Situation" by Philip G. Zimbardo. This article discusses issues related to how good people can turn bad. SUMMARY In this article‚ Zimbardo looks at his previous social experiment on physical abuse in prison and discusses
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are amylases? Amylases are enzymes that break down starch or glycogen. Amylases are produced by a variety of living organisms‚ ranging from bacteria to plants and humans. Bacteria and fungi secrete amylases to the outside of their cells to carry out extracellular digestion. When they have broken down the insoluble starch‚ the soluble end products such as (glucose or maltose) are absorbed into their cells. Amylases are classified based on how they break down starch molecules i. α-amylase (alpha-amylase)
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