DNA Structure Monday‚ 15 April 2013 9:01 AM - DNA = Deoxyribonucleic acid DNA is a double-helix: it has two strands that twist around each other Each strand is made of single units call nucleotides It has a sugar-phosphate backbone Bases join the two strands by hydrogen bonds ○ These bases are cytosine‚ guanine‚ adenine and thymine. - Complementary base pairing is a key idea in genetics: C pairs with G‚ and T pairs with A. - Each strand of DNA can be millions of base pairs in length and is
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Chapter 3: FLUID FLOW CHAPTER THREE FLUID FLOW 3.1 3.2 3.3 3.4 3.5 Fluid Flow Unit Pump Test Unit Hydraulics bench and accessories Flow Curve Determination for Non-Newtonian Fluids Fixed and Fluidized Bed Facts which at first seem improbable will‚ even in scant explanation‚ drop the cloak which has hidden them and stand forth in naked and simple beauty. GALILEO GALILEI 1 3.1. FLUID FLOW UNIT Keywords: Pressure loss‚ straight pipe‚ pipe bend‚ orifice meter‚ venturi meter
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Drunk driving “Please blow into this machine. Thank you.” If you are a driver‚ this sentence is familiar to you. Many police examine drunk driving at the crossroads every day. Meanwhile‚ numbers of advertisements and messages on TVs and radios persuade us not to drive after drinking. Driving without drinking has become a common understanding. But why do we have to accept this? And what would we do if somebody is drunk driving? Today‚ I hope to convince you that drunk driving is terrible and that
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Effects of Changes in Physical Properties on Enzyme Activity By Alex Hoffmann First Individual Lab Report Wednesday 7:30-10:15pm 10/24/12 Meghan Duell Abstract The goal of this lab was to determine the effects of certain physical properties on enzyme activity. Enzyme activity was measured by the height of the bubbles that appeared after the enzyme was added which are proportional to the rate of the reaction when time is constant. The fact that enzyme activity is affected by physical
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The Effects of Varying pH on Enzyme Activity A lab was conducted to test different pH balances on an enzyme. Introduction: Enzymes are protein catalysts that speed up a chemical reaction without being consumed in the process. Enzymes are three-dimensional structures that consist of one or more polypeptide chains. The polypeptide chains form an active site (where a substrate will fit into). Enzyme molecules are folded into a very specific shape held together by the different forces of attraction
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IB Biology Sheran Gu Meghan Lena Nov. 15th Influence of pH on Enzyme Activities How does the pH of solution influence the speed of enzyme activities? Enzymes are protein catalysts and chemical that speed up chemical reaction without being involved in the reaction. They are involved in the human digestive system to help people digest food more efficient. Food are substrates to be break down and absorb through the digestive system in the body. Substrate is a molecule that bond with the active site
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A Manual for the MECHANICS of FLUIDS LABORATORY William S. Janna Department of Mechanical Engineering Memphis State University ©1997 William S. Janna All Rights Reserved. No part of this manual may be reproduced‚ stored in a retrieval system‚ or transcribed in any form or by any means—electronic‚ magnetic‚ mechanical‚ photocopying‚ recording‚ or otherwise— without the prior written consent of William S. Janna 2 TABLE OF CONTENTS Item Page Report Writing............
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Basic Biochemistry CP2085 Effect of Temperature‚ Study and Measure of Enzymes Activity Abstract This experiment investigates the effect that temperature has on the rate of activity of enzyme β-galactosidase and also the rate of β-galactosidase activity in different concentration of substrate over time. Ο-nitrophenylgalactoside (ONPG) is used as a substrate for β-galactosidase. A spectrophotometer is used to detect the change in colour of the substrate. Results show that increase in temperature
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Hypothesis The optimum temperatures of Alcalase and Savinase will be different. Above and below their optimum temperatures activity will decrease. Biological explanation This investigation is designed to look at the effect of temperature on the activity of the proteases Alcalase and Savinase. By the end of it I hope to know the optimum temperature of both proteases. The substrate I am going to use during the experiments is the protein gelatin‚ which is a translucent‚ colourless‚ brittle solid
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Investigating the effect of pH on the activity of the enzyme catalase. Introduction Hydrogen peroxide (H2O2) is a very pale blue liquid which appears colourless in a dilute solution‚ slightly more viscous than water. It is a weak acid. It has strong oxidizing properties and is therefore a powerful bleaching agent that is mostly used for bleaching paper. Catalase is a common enzyme found in all living organisms. Its functions include the conversion of Hydrogen Peroxide‚ a powerful and potentially
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