By: Jayquan S Salmond Out of all the amino acids‚ 8 are classified as essential amino acids. The body finds it hard to combine them with other compounds at a normal level to assist in adequate growth. The 8 are known as phenylalanine‚ valine‚ threonine‚ tryptophan‚ isoleucine‚ methionine‚ leucine‚ and lysine. When the isoleucine‚ leucine‚ and valine are grouped they are called BCAA or branched-chain amino acids. 1/3 of the body’s skeletal muscles are made up of BCAA. Skeletal muscles are
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Research Question: How will an increase of FeSO4 concentration affect the activity of the enzyme catalase? Hypothesis: By increasing the concentration of FeSO4‚ there will be a decrease in the activity of the enzyme catalase because the Iron (ii) in the metallic ion will act as an inhibitor during the catalysis of the hydrogen peroxide into O2 and H2O. Introduction: We rely on oxygen to provide us with energy (ATP) and go through all the phases of aerobic respiration. However‚ oxygen can be
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environmental factor studied. More specifically‚ the enzyme catalase and its substrate hydrogen peroxide were tested under different temperatures. It was discovered that‚ temperature can affect the optimum operation of enzymes; The enzyme catalase has an optimum operation condition (in this case it would be a specific temperature) in which the enzyme’s efficiency is at its highest. To achieve the data‚ six different pieces of beef liver (the source of catalase) were prepared at four distinct temperatures. Very
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Catalase Lab Introduction: Catalase is an enzyme normally found in many plant and animal tissues. Its purpose is to destroy toxic substances which may be introduced into cells. Also‚ some cells use catalase to destroy cellular debris or worn out organelles. In this lab‚ we will use a catalase solution from potatoes and determine the effect of temperature and pH on the action of this enzyme. The substrate of the enzyme will be 3% hydrogen peroxide (H2O2). Catalase works by the following mechanism:
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THE EFFECT OF CONCENTRATION ON REACTION RATE INTRODUCTION • Concentration is one factor which has an effect o the rate of a chemical reaction. In chemistry we describe concentration in terms of the number of moles of a substance there are in every cubic decimetre (litre) of solution‚ written as moles.dm-3 of M for short. • In this experiment you will find out how increasing the concentration of the acid solution changes the rate of the reaction between dilute hydrochloric acid and magnesium
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concentrated‚ which was hard to identify the shape of the bacteria‚ while other sections were less concentrated and was easier to analyze the shape. The next step according to the result‚ will be a catalase test.
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Acid Base Titration bre’ana March 1‚ 2013 Purpose: The purpose of this experiment is to determine the concentration of a solution of NaOH by titration with a standard solution of HCl. It was also the purpose to determine the concentration of a sample of white vinegar by titration with a standard solution of NaOH. Introduction: Using the method of titration is how the experiment gets to the conclusion of the concentration of a solution. When doing this experiment‚ measurement is very important
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Effects of Citric Acid on the Viscoelasticity of Cornstarch Pastes MADOKA HIRASHIMA‚ RHEO TAKAHASHI‚ AND KATSUYOSHI NISHINARI* Department of Food and Human Health Sciences‚ Graduate School of Human Life Science‚ Osaka City University‚ Sumiyoshi‚ Osaka 558-8585‚ Japan The effects of citric acid on the rheological properties of cornstarch pastes were studied by steady shear and dynamic oscillatory viscoelasticity‚ intrinsic viscosity measurements and microscopic observation. The pH of cornstarch
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influence on the enzyme activity will be the subject of this investigation. Catalase of potato tuber cells will be the enzyme used in the experiment. RESEARCH QUESTIONWhat is the influence of different values of pH on the activity of catalase in potato tuber cells?VARIABLESIndependent: potato discs treatment (placing them into buffer solutions of different pH values‚ mixed with hydrogen peroxide)Dependent: the activity of the catalase‚ reflected by the rate at which oxygen is evolved‚ measured at every
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E XPE RIME NT 4 . 5 Reactions of acids Aim To investigate and compare some reactions of a strong acid‚ hydrochloric acid‚ and a weak acid‚ ethanoic acid (common name‚ acetic acid) Equipment Dropper bottles containing: • 0.1 M hydrochloric acid‚ HCl • 0.1 M ethanoic acid (acetic acid)‚ CH3COOH • 0.1 M sodium hydroxide‚ NaOH • 1 M hydrochloric acid‚ HCl • 1 M ethanoic acid (acetic acid)‚ CH3COOH • universal indicator solution • limewater (calcium hydroxide‚ Ca(OH)2) Marble chips (calcium carbonate
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