Biology- Change in pH Aim: To investigate the affect that change in pH levels has on a particular enzyme‚ in this case amylase. Hypothesis: In this investigation I expect as the pH reaches the optimum level‚ the rate of reaction will be fastest‚ compared to other pH levels. It is also suspected that after the enzyme has reached optimum level the enzyme activity will decrease. Through further study of the optimum level of amylase I found that the enzyme usually has an optima pH of 8. It is known
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Processes of Digestion: Activity 1: Assessing Starch Digestion by Salivary Amylase Lab Report Pre-lab Quiz Results You scored 100% by answering 6 out of 6 questions correctly. 1. The substrate for amylase is You correctly answered: e. starch and carbohydrate. 2. Which of the following is true of enzymes? You correctly answered: c. Their activity can be affected by temperature and pH. 3. The reagent IKI tests for the presence of You correctly answered: a. starch. 4. Which of the following is not true of
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Predicted Results Benedict’s results #1 Glucose none positive #2 Starch none negative # 3 Onion juice Sugars present positive #4 Distilled Water none negative Questions A. Which of the test tubes are used as the positive and negative controls? The positives are 1:glucose and 3: onion juice. The negatives are 2:Starch and :4 water. B. How did the predicted results compare to the actual results? I was wrong in thinking starch would have a positive result when it was actually negative. C
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Research articles often are described as qualitative or quantitative. To narrow/broaden your search‚ remove the words qualitative and quantitative and include words that narrow or broaden your main topic. For example: Diabetes and pediatric and dialysis. To determine what research design was used‚ review the abstract and the methods section of the article. The author will provide a description of data collection using qualitative or quantitative methods. This assignment uses a grading rubric
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certain substrate. For example‚ lipase is a specific enzyme for fat substrates and protease‚ a specific enzyme for protein substrates. In the same way amylase is a specific enzyme used for carbohydrate substrates. In our experiment‚ our substrate is starch and so our enzyme is amylase. I think that amylase will not work properly when heated at 10°C because enzymes need heat for the particles to gain kinetic energy and collide with each other. At10°C‚ enzymes don’t move as fast as they can if the temperature
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Chapter 17 End of life care includes: palliative care- comprehensive care for patients whose disease is not responsive to cure; care also extends to patients’ families; management of psychological‚ social‚ and spiritual problems as well as control of pain and other physical symptoms; to improve pt and family’s quality of life hospice- care provided to terminally ill patient’s and their families; death has been accepted‚ bereavement for family; generally associated with palliative care that is
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Micheal Harrington‚ Joan. C Sharp‚ 2009). Amylase is used as a catalytic enzyme to determine the time period to convert starch into glucose monomers and transport into the bloodstream at different ph levels. Methods involved are obtaining six test tubes (different ph levels) with mixture of dilute starch solution and amylase. Starch indicator solution is used to determine if the starch have been converted to glucose using the catalytic substance amylase. Under the chemical conditions of ph 4‚ 8 and
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Ye Tao BISC220-13155 The Effect of Temperature on the Digestion of Starch by Activity of Enzyme α-Amylase: Observation of Rate of Starch Disappearance through Iodine Test Introduction An enzyme is a type of protein that‚ through its own structure including hydrogen bonds‚ acts like a biological catalyst and is able to accelerate the biochemical reaction rate by lowering the activation energy of the whole process‚ without which cells could hardly practice any physiological functions within human
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activity of amylase. This was achieved by attaining amylase enzyme‚ starch solution and potassium iodide (determines if enzymes hydrolyses the starch solution)‚ water bath and a hot plate. The temperatures used for this experiment were room temperature‚ 37oC‚ 60oC‚ 80oC‚ and 90oC. The hypothesis developed was that as the temperature increased‚ so will enzyme activity. Therefore‚ the ability of the enzyme to break down the starch solution will occur at a faster rate because of the increased temperature
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pills. Should you? In the United States today many people have supposedly lost weight with certain pills. One of these pills is called carb cutter. Carb Cutter claims to inhibit the activity of the starch-digesting enzyme‚ amylase. When the diet pill binds to the amylase‚ it prevents the breakdown of starch. In the Biology 1103 lab‚ we conducted two experiments to determine whether or not the diet pill‚ Carb Cutter‚ actually worked. In each experiment we used an experiment tube and a control (blank)
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