instead‚ they continuously copy their DNA. The research conducted in this study was to see if‚ in fact‚ that cell size had anything to do with the initiation of DNA replication in bacteria. The objectives and hypothesis was clearly stated in the paper. In order to find the answer to their question‚ the researchers used Escherichia coli (E. coli) and Bacillus subtilis (B. subtilis) in their experiment. Both E. coli and B. subtilis are common and well known bacteria that are used in research.
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was designed to investigate the effects of temperature on reactions between the enzyme catalase found in animal tissue with the substrate H2O2. The hypothesis stated that an increase in the temperature of the substrate would create a subsequent increase in the rate of reaction between the enzyme and the substrate. This hypothesis was tested by immersing 1cm cubes of animal tissue (sheep liver) which contained the enzyme catalase into the substrate (H2O2 ) mixed with detergent which foamed showing a
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What is the scientific method? It is a process used to find answers to questions about the world around us. It begins with a question that comes from observation and is answered through an organized method of conducting and analyzing an experiment. (Mularella‚ 2007) In this hypothetical example‚ I would like to explore the answer to the following question: Can K-gro brand fertilizer increase tomato crop yields by up to 50%? First‚ this question must have originated through observation. I
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Scientific Method The scientific method proves how important chemistry is in our lives and in society through observation and experimentation. There are many steps involved in the scientific method. Each of these steps can be used by society today in industry‚ market‚ and even academia. The scientific method can even be used in our daily lives as well as in our future careers. Chemistry may not be believed to be used by most people in their daily lives‚ but the scientific method shows us that chemistry
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ENZYMES LABORATORY REPORT Introduction The utilization of any complex molecule for energy by an organism is dependent on a process called hydrolysis. Hydrolysis breaks complex molecules into simpler molecules using water. Similarly‚ the process that is the reverse of this is called dehydration synthesis‚ which removes water from simpler molecules. However‚ because hydrolysis occurs very slowly‚ living organisms use biochemical’s called enzymes to speed up the reaction. In this lab exercise
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Investigating the effects of changing temperature on the activity of enzymes Background information: Renin is an enzyme that catalyses the coagulation of milk. It is found in the stomach of many animals and is used in making cheeses and junkets. It is found in the gastric juices or gastric mucosa of many mammals‚ including humans. In the human stomach‚ particularly those of infants‚ rennin works to curdle milk so that pepsin‚ another stomach enzyme‚ can further breakdown the proteins into absorbable amino
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62 Iodine test for starch Amount of starch remaining Enzyme activity level Dark blue-black All None (0) Blue Most Low (1) Light brown Some Moderate (2) Gold None High (3) Part 1: Effect of Enzyme Concentration 1. Label five test tubes 1-5. Place 4 mL of 1 % starch in each of the first four test tubes. Place 4 mL of amylase solution in the fifth tube. Place all of the tubes in the 37°C water bath for 5 minutes. Obtain 5 clean droppers and label them 1-5. (To avoid contamination of these solutions
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Scientific Method American InterContinental University Online SCIE206-1301B-12 Instructor Mamie Ware March 31‚ 2013 Scientific Method Observation: During the winter‚ you spread salt daily on your driveway to melt the snow. In the springtime‚ when the lawn begins to grow‚ you noticed that there is no grass growing for about 3 inches from the driveway. Furthermore‚ the grass seems to be growing more slowly up to 1 foot from the driveway. Question: Might grass growth be inhibited by salt
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MN1001 ASSIGNMNET QUESTIONS: Scientific Management was the product of 19th Century industrial practices and has no relevance to the present day. Discuss. In the 19th century workers usually worked at a slow pace so scientific management was introduce by Frederick W. Taylor and this management can also be called Taylorism. The main purpose why scientific management was introduced was for organisations in the 19th century to improve their labour productivity. Frederick W. Taylor was the main person
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Sterling Hayden AP Biology Mrs. Proehl 24 November 2014 I. Title Effect of Differing pH‚ Temperature‚ and Enzyme Concentration on Catalase Reaction Rate II. Introduction Enzymes are used to increase the rate of specific reactions in the body. Catalase‚ a specific enzyme‚ speeds the breakdown of hydrogen peroxide‚ a toxic chemical produced by cells in the body‚ into water and oxygen (Cain and others‚ 2010). The oxygen can be observed as bubbles coming from the reaction site. Catalase is found in many living tissues of organisms
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