catalyzes the synthesis of a large molecule from two smaller molecules. (4 marks) 9. Explain how the following environmental factors affect enzyme activity: a. pH (2 marks) b. Enzyme and substrate concentration (2 marks) 10. Examine the following data for three enzymes (A‚ B‚ and C). Each has been tested at a number of temperatures and pH levels to measure their activities. Based on these results‚ for each enzyme (A‚ B‚ and C)
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Investigating the Enzymatic Activity of Catecholase through Temperature‚ pH‚ Enzyme Concentration‚ and Substrate Concentration University of Alabama at Birmingham Burgess‚ B.N. Introduction: Background Enzymes are macromolecules that act as catalysts in living organisms by speeding up chemical reactions without being changed or destroyed by the reaction (Campbell and Reece‚ 2008). Enzymes are able to speed up the rate of a chemical reaction by decreasing the activation energy during the reaction
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FC024 10th Jun 2013 Monday 2-4 pm Scientific Principles and Enquiry (Working in Pairs) Experiment 1 – pH Titrations Introduction In quantitative chemical analysis‚ acid - base reactions are often used to provide a basis for various titration techniques. The equivalence points of acid - base titrations can be estimated from the colour change of chemical indicators‚ such as phenolphthalein‚ methyl red‚ methyl orange and so on. The choice of an indicator
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Sofia Dominguez 10-O 19/03/14 Effect of pH on germination of seeds: Design Practical Introduction: The term pH stands for Hydrogen Potential it is used to determine the acidity of a substance. The pH scale goes from 0 to 14. The values that are smaller than 7 indicate the range of acidity. Higher pH values are alkaline and a pH of 7 is neutral. Acidity is a function of the concentration of hydrogen ions (H+)‚ or protons. The strength of alkaline solutions is measured by the concentration of hydroxide
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Effects of Temperature and pH on Enzyme Function Chelsie Mesa Section 0479 Robin Cotter Introduction The purpose of this experiment is to identify three unknown enzymes. This is done by using different temperature and pH to affect the function of the enzyme‚ which ultimately‚ will affect how much maltose is produced. Enzymes are proteins that help catalyze chemical reactions. In enzymatic reactions‚ the molecules at the beginning of the process are called substrates‚ and the enzyme
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Lab Report Factors That Affect Enzymes Reaction Rate Name of lab: Effects of temperature‚ pH‚ Enzyme Concentration‚ and Substrate Concentration on Enzymatic Activity Introduction: Enzymes are the most important types of proteins‚ they act as catalysis (speed up chemical reactions). If enzymes didn’t exist‚ biochemical reactions would act to slowly and they couldn’t keep up with the metabolic functions. Enzymes have a three-dimensional structure that is really complex. This structure consists
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Arterial Blood Gas Interpretation (ABG) Arterial Blood Gas Analysis is used to measure the partial pressures of oxygen (PaO2)‚ carbon dioxide (PaCO2)‚ and the pH of an arterial blood sample. Oxygen content (O2CT)‚ oxygen saturation (SaO2)‚ and bicarbonate (HCO3-) values are also measured. A blood sample for ABG analysis may be drawn by percutaneous arterial puncture from an arterial line. The ABG analysis is mainly used to evaluate gas exchange in the lungs. It is also used to assess integrity of
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2008). Soil PH directly affects the life and growth of a plant‚ since it affects the availability of the nutrients needed for plant life. Most nutrients are in their most available state within a PH of 6.0 – 6.5 (Kissel and Miller‚ 2008). To germinate‚ seeds need favourable external conditions as well. In this lab the effect of acidic conditions on seed germination using lettuce seeds as the model has been observed. These properties were investigated using acidic solutions with various PH values. However
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INTRODUCTION Maintaining blood pH is so important to keep our body healthy. The internal pH for most of living thing is close to 7. The normal pH of human blood is between 7.35 and 7.45. A person cannot survive for more than a few minutes if the blood pH drops or rise from the normal blood pH. If the blood pH is not in the normal blood pH‚ the person can fall sick and it might be harm to the person. The maintenance of blood pH is called acid-base homeostasis. Acid-base homeostasis is a complex synergy
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This page intentionally left blank Copyright © 2008‚ New Age International (P) Ltd.‚ Publishers Published by New Age International (P) Ltd.‚ Publishers All rights reserved. No part of this ebook may be reproduced in any form‚ by photostat‚ microfilm‚ xerography‚ or any other means‚ or incorporated into any information retrieval system‚ electronic or mechanical‚ without the written permission of the publisher. All inquiries should be emailed to rights@newagepublishers.com ISBN (13) : 978-81-224-2652-6
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