...ENZYME-CATALYZED REACTION Lab 5: Investigating an Enzyme-Catalyzed Reaction September 24, 2014 Principles of Biology 120.601 Mrs. Annemarie Duncan Abstract: (Burmania) This experiment was performed in order to examine ways in which a potato catalase enzyme reacts to various assays with differing variables. To do so a baseline assay (undiluted extract and room temperature H2O2) was used within the experiment with only one other variable changed in the other assays. These variables included a boiled, frozen and then thawed, and frozen potato extract and dH2O instead of the potato extract. It was noted that the temperature and or way the potato extract was prepared effects how the enzyme with the potato will react. Therefore the results of each assay varied, suggesting there is more than one way that a catalyzed reaction can occur. Introduction: (Burmania) The main purpose for this experiment was to explore how an enzyme catalase caused a reaction to catalyze through doing various assays using potato extracts. Enzymes are catalysts that are crucial in helping to speed up reactions, and catalase is a common enzyme found in almost every living organism that is exposed to oxygen. For this experiment, potatoes were used because they were previously known to have significant catalase activity. The potato catalase was mixed with hydrogen peroxide because the catalase helps to breakdown the hydrogen peroxide which helps determine how long a paper disk takes to float...
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...About 10,800,000 results (0.27 seconds) Search Results What is your reaction in the movie the core.? - Yahoo Answers https://ph.answers.yahoo.com/question/index?qid... May 13, 2008 - I thought the movie was dumb. ... The Core sucked. Scientifically it is SOoo wrong that it takes away from the story. There is not a single movie that ... What is ur reaction on the movie the core? 26 Mar 2014 What is the reaction paper for the movie "the core"? 12 May 2009 Summary of movie "the core" and its scientific reaction? 4 May 2009 Reaction paper about the movie The Core?r=1224385628? 18 Oct 2008 More results from ph.answers.yahoo.com The Core Reaction Paper - Term Paper - Melsanvicente www.termpaperwarehouse.com › Other Topics Sep 19, 2013 - The Core Reaction Paper. The Core is a 2003 science-fiction film wherein the world is about to encounter its impending doom because the ... What Is at the Core of a Nuclear Reaction - Ask.com www.ask.com › Q&A › Entertainment › Movies The movie, the core was alright. It was adventurous. It had many good actors in it. The concept was a little far fetched but overall it was a good movie. What is your reaction about the movie THE CORE wiki.answers.com › Wiki Answers › Categories › Science Reaction paper on the movie 300? Taon 480 BC at Haring Leonidas ng Sparta ay nagpadala isa sa kanyang mga sobrang lalaki na sundalo mula sa larangan ... 60 Free Essays on Reaction About The Movie Of The Core ......
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...Purpose: Will the rate reach completion in a closed system? What is the speed at which the Oxygen reacts with the Glucose and the Oxygen is used up? The reaction is very slow and needs a catalyst, Potassium Hydroxide, to accelerate the reaction. In addition, the rate equation for this reaction is a forward rate. Furthermore, the reaction can be monitored by the change in color of Methylene Blue, it is blue in the presence of oxygen and colorless in the absence of oxygen. Hypothesis: The rate will reach completion in a closed system by speeding up the reaction, using a catalyst, Potassium Hydroxide, while using Methylene Blue to see the change by the color of the solution. Materials: Half gallon of Water Erlenmeyer Flask Glucose (white cane sugar) Potassium Hydroxide Flakes [2 lbs.] (KOH) (catalyst) Methylene Blue Saturated 1% (indicator) Syringe [1 mL] Glad Cling Wrap Table Heavy Duty Reynolds Wrap 2 Plastic Spoons 2 Safety Glasses Paper Towel Roll Procedure: Organize your materials Pour the water into an Erlenmeyer flask and fill until 300 mL Add Glucose to the flask [ one teaspoon ] Stir until visually dissolved Measure the time that the solution took to dissolve the Glucose Add Potassium Hydroxide flakes to the flask [ one teaspoon ] Stir until visually dissolved Measure the time that the solution took to dissolve the Potassium Hydroxide Prepare the lid Add two drops of Methylene Blue to the flask Quickly seal the container/Erlenmeyer flask Observed the...
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...experimenters are wearing goggles. Acquire 5 test tubes, a test tube stopper per test tube, and one test tube rack. Place all five of the test tubes in the test tube rack. Cut out circles from the 2 filter papers using a 6mm hole puncher. Obtain a 500mL bottle of 30% hydrogen peroxide, and measure 25.0 mL [±0.5mL] of Bos Taurus Liver Catalase Enzyme Solution (4.0 mol/L), with the use of a 50.0 mL graduated cylinder. Pour the 25.0 mL enzyme solution into a 250 mL beaker. Using the (cleaned) 50.0 mL graduated cylinder, measure 10.0 mL [±0.5mL] of hydrogen peroxide. Pour 10.0 mL of H2O2 into one of the 5 test tubes, with the use of a funnel. To control the temperature of the hydrogen peroxide, pour 300 mL (as measured by a 1000...
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...Lightweight Geopolymer Concrete with EPS Beads Introduction This research paper is mainly concerned with the production of lightweight geopolymer concrete using expanded poelystyrene (EPS) beads as part replacement of the normal aggregates for precast building components as well as in sandwich construction, the information on properties of lightweight geopolymer concrete with different percentage of EPS bead aggregate is given and it is also compared with the with the existing guidelines (ASTM C 90). Furthermore, performance of EPS/geopolymer concretes is discussed in relation to their flammability and insulation characteristics (Techniques used; DSC (Differential scanning calorimetry, based on heat difference), TG/DTA (Differential thermal analysis, based on temperature difference) and FTIR (Fourier transform infrared spectroscopy) under quasi-isothermal mode). Geopolymers as an alternative to ordinary Portland cement for concrete is used because it has high early compressive strength, low drying shrinkage, good fire resistance and superior durability in aggressive environment compared to Portland cement concrete. Geopolymers are produced through reactions between the alumino-silicate reactive materials (metakaoline, slag, fly ash etc) and their strength and microstructural properties are studied under fresh and hardened states. The selection of EPS bead aggregate was made mainly due to its low density, closed cellular structure, hydrophobic and energy absorbing characteristics...
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...to the civil war in the end. Contrary to north, southern region had feudal society and prevalence of slavery. There were extremely rich, each with enslaved people. The difference was escalating between both regions, and people belonging to those regions they identified themselves as different people. The difference led to the Civil war in the end. Kansan is 1850’s The state of Kansas possesses a central place in civil war history, as well as, the pre civil war era. Before the beginning of civil war, Kansas was undergoing fights between pro-slavery and anti-slavery groups. The tension was centered to address the notion, whether Kansas would be regarded as slave or a Free State territory or a slave state territory Negros (Kleppnerr, p. 300-316). The issue was to maintain peace between Abolitionists and slave holders. The slavery and its opposing groups initiated war on Kansas border in 1850, which is known as ‘the border war’. Since, the government decided to shift a huge number of Native Americans to Kansas, the decision was made due to Kansas geographic location to Indian Territory. The people of Kansas were condemning it, and see slavery as a justified conduct on Part of democratic United States. They were stringent towards the slavery, as they believed Kansas was being made of to the Negros...
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... (4) ANSWER ALL QUESTIONS (5) QUESTIONS ARE NOT OF EQUAL VALUE. (6) THIS PAPER MAY BE RETAINED BY CANDIDATE. (7) CANDIDATES MAY BRING INTO THE EXAMINATION: Calculator, drawing instruments and one A4 double sided paper with any information they choose written on them. Photocopies of such sheets are an acceptable alternative. Anything else is not, including sheets with material glued or stapled to them. These sheets must be submitted with your examination paper. (8) ALL ANSWERS MUST BE WRITTEN IN INK. EXCEPT WHERE THEY ARE EXPRESSLY REQUIRED, PENCILS MAY BE USED ONLY FOR DRAWING, SKETCHING OR GRAPHICAL WORK. Question 1: (18 marks) The beam shown in Figure 1 carries a uniformly distributed load of 10 kN/m, plus two 100 kN concentrated loads as shown. 1) Calculate the reactions at B and E 2) Draw the shear force and bending moment diagrams, clearly indicating the magnitude and sign of all actions at A, B, C, D and E. 100 kN 10 kN/m A B 100 kN 5m 8m C D E 6m Figure 1 4m Question 2: (18 marks) For the frame shown in Figure 2, 1) Find the reactions at A and D. 2) Draw the axial force, shear force and bending moment diagrams for the frame, showing the magnitude of all peak values. 10 kN/m B C D 5m 100 kN 50 kN A 4m Figure 2 6m Page 2/4 PLEASE TURN OVER Question 3: (14 marks) For the pin-joined truss shown in Figure 3, 1) Find the reactions at A and F. 2) Determine the axial force in members BC, GC, GH and CH. State if...
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...Cell Processes: Photosynthesis Part 1: Pigments in Plant Leaves Purpose: The purpose of this experiment is to visualize the pigments present in plant leaves by using paper chromatography. Materials Used: Chromatography vial with cap, wax pencil, disposable transfer pipet, chromatography solvent, chromatography paper strip, sharp pencil, ruler, pair of scissors, piece of fresh pre-soaked spinach, coin, pair of forceps. Observations and Data: Distance of Pigments From Original Pencil Line | | Pigment | Color | Migration Distance (mm) | Rf Value | | Carotene | Orange | 59 mm | .94 | | Xanthophyll | Yellow | 56 mm | .89 | | Chlorophyll a | Light Green | 29 mm | .46 | | Chlorophyll b | Dark Green | 14 mm | .22 | Solvent | | 63 mm | | Analysis and Results: 1. Which pigment migrated the farthest on the chromatogram? Explain how this migration occurred. According to the data Carotene travel furthest, this is because it was the most soluble and it didn't form bonds with the paper. 2. What does the Rf value represent? If you were to perform your experiment on a chromatography paper twice the length of the one used, would your Rf values still be the same? Rf value represent the distance traveled by the pigments divided by distance traveled by solvent. The Rf value would stay the same because if the pigments travel further so will the solvent. 3. How do plant pigments and the absorption spectrum relate to photosynthesis? In a plant there are...
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...force of nature. The dangerous thing about the chemical reactions in fire is the fact that they are self-perpetuating. The heat of the flame itself keeps the fuel at the ignition temperature, so it continues to burn as long as there is fuel and oxygen around it. The flame heats any surrounding fuel so it releases gases as well. When the flame ignites the gases, the fire spreads. So it is important that we understand the process of how it works to better protect ourselves from the dangers of fire. People used to considered fire as one of the major elements in the universe, alongside water, earth and air. But fire is really something completely different. Earth, water and air are all forms of matter; they are made up of millions and millions of atoms collected together. Fire isn't matter at all. It's a visible side effect of matter changing form. It’s one part of a chemical reaction. Typically, fire comes from a chemical reaction between oxygen in the atmosphere and some sort of fuel (wood or gasoline, for example). Of course, wood and gasoline don't spontaneously catch on fire just because they're surrounded by oxygen. For the combustion reaction to happen, you have to heat the fuel to its ignition temperature. The sequence of combustion generally goes like this: Something heats the wood to a very high temperature. The heat can come from lots of different things for example a cigarette or lightning. When the wood reaches about 300 degrees Fahrenheit (150 degrees Celsius), the heat...
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...ISC Board Question Paper Class XII – 2009 Chemistry (Theory) (Candidates are allowed additional 15 minutes for only reading the paper. Thay must NOT start writing during this time) General Instruction: (i). All working including rough work should be done on the same sheet as, and adjacent to the rest of the answer. (ii). The intended marks for questions or parts of questions are given in brackets []. (Material to be supplied: Log tables including Trigonometric functions) (iii). A list of useful physical constants is given at the end of this paper. PART I Q1. (a) Correct the following statements by changing the underlined part of the sentence. (Do not change the whole sentence) : [5] (i) For all spontaneous processes the change in entropy is zero. (ii) Formaldehyde undergoes Cannizzaro’s reaction since it has one alpha hydrogen atom. (iii) In a co-ordination complex, donation of electron pair takes place from the central metal atom to the ligands. (iv) An aqueous solution of sodium sulphate is acidic in nature. (v) The solubility product of sliver chloride in water decreases on addition of potassium chloride to the solution. (b) Complete the following statements by selecting the correct alternative from the choices given: [5] (i) The number of Faradays required to reduce one mol of (Cu)+2 to metallic copper is: (a) One (b) Two (c) Three (d) Four. (ii) When...
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...and create a vaccine for a disease that killed almost 300 million people. Therefore, Edward Jenner is remembered to save more lives than any other medical doctors. Edward Jenner was born to Stephen Jenner and Sarah Jenner on May 17, 1749. Jenner’s father was a preacher for the parish and he “passed away when Jenner was 5 years old” (www.famousscientist.org). Following his father's passing, Edward was taken care of by his mother and his brothers and sisters. As a young child, Edward would wander around and observe plants, animals, and collect fossils. Edward was able to go to school at the age of 8, as he was going to school he decided that he wanted to become a doctor. Edward received “training at Chipping Sodbury, he was an apprentice for Daniel Ludlow, a surgeon.(www.famousscientist.org). In 1770, after 7 years of studying under...
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...REACTION 4 The Secret Republic of the Philippines UNIVERSITY OF ANTIQUE College of Business and Management Graduate School Sibalom, Antique Subject: Business Policy Topic: Reaction Paper (The Secret) I. Introduction The Secret is a best-selling 2006 self-help book written by Rhonda Byrne, based on the earlier film of the same name. It is based on the law of attraction and claims that positive thinking can create life-changing results such as increased wealth, health, and happiness. The book has sold more than 19 million copies worldwide and has been translated into 44 languages, but has nevertheless attracted a great deal of controversy, as well as being parodied in several TV programs. About the Author Rhonda Byrne (born 12 March 1951) is an Australian television writer and producer, best known for her New Thought works, The Secret—a book and a film by the same name. By the spring of 2007 the book had sold more than 19 million copies and the DVD more than 2 million. She has also been a producer for Sensing Murder. According to an article published by Australia's Herald Sun, Byrne has also worked on the Australian TV series World's Greatest Commercials and Marry Me. In 2007, Byrne was listed among Time Magazine's list of 100 people who shape the world. She gained her fame and fortune after appearing on The Oprah Winfrey Show.[2] On 17 August 2010, The Power, which is a sequel to The Secret, was published as both a hardcover edition and audio CD. According...
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...| Syllabus College of Natural Science BIO/100 Version 2 Introduction to Life Science with Lab | Copyright © 2009, 2007 by University of Phoenix. All rights reserved. Course Description This course applies a broad, conceptual understanding of biology. Students are introduced to scientific ideologies and concepts that not only shape the biological world, but also shape humans. Students examine the scientific method, evolution and biodiversity, the biology of cells, physiology, the dynamics of inheritance, and the effect humans have on the environment. The text emphasizes methods and the theoretical foundations of ideas, while minimizing isolated facts. It stresses the integration of ideas, making connections that form an understanding of the living world. The weekly online labs add a practical component to the class. The labs build upon the concepts in the text and offer a chance to interact with the material and further their understanding. Policies Faculty and students/learners will be held responsible for understanding and adhering to all policies contained within the following two documents: University policies: You must be logged into the student website to view this document. Instructor policies: This document is posted in the Course Materials forum. University policies are subject to change. Be sure to read the policies at the beginning of each class. Policies may be slightly different depending on the modality in which you attend class. If you have...
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...The Color of Sin: White and Black And Perceptual Symbols of Moral Purity and Pollution. Sherman and Clore (2009) aimed to look at aimed to look at three different conditions involving moral and immoral words appearing in either black or white. They also wanted to see if the time taken to name a colour differs when it black which connects to immorality or in white which relates to morality. In addition to this they added in 2 conditions which took place before naming the colours. They used a series of metaphors in order to explain many of their concepts. Their first study was based on an experiment done by Meier et al (2004) using the Stroop colour- word task (1935). They used the same words and found that immorality-blackness associations operate quickly and automatically. These associations influenced performance on the Stroop task, so a task that requires identifying colours does not require any moral evaluation and can be performed quickly. The second study was the same as the first but used a new set of words, in order to test whether the moral Stroop effect is susceptible to conditions that make immorality more prominent, this was similar to a study by Zhong and Liljenquist (2006). Alongside this task another small task was introduced where they had to read a story which either had a morally wrong or right answer. After analysis of the results they found that people, who showed no Stroop effect initially, were affected by simply being exposed to unethical behaviour...
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...Introduction Gordon Allport stated that social psychology means “...to understand and explain how the thought, feeling and behaviour of individuals are influenced by the actual, imagined or implied presence of other human beings...” (1985). In this essay I am going to explain the thought, feeling and behaviour of individuals as influenced by the actual, imagined or implied presence of other human beings. I will be talking about theories and experiments carried out by Charles Cooley, Michael Argyle, Muzafer Sherif, Solomon Asch and Stanley Milgram. The essay will focus on their theories and experiments carried out in relations to self concept, conformity and obedience. Self Concept Self concept is a term used by psychologists; it means the way in which we identify ourselves. In the early 1900’s Charles Cooley developed the ‘looking-glass self’ theory. He explained how we see ourselves as the result of how others see us. Cooley’s theory; ‘looking-glass self’, consists of three major stages. 1. I imagine how my personality and appearance will look to other people. 2. I imagine how other people judge the appearance and personality that I think I present. 3. I develop a self-concept. For example 1. A group of bullies comment on a girl’s appearance. 2. The bullies think she is ugly. 3. The girl believes she is ugly. A positive change can happen when the opposite is done; when people think the girl looks pretty, people say...
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