Introduction In this lab‚ we experimented the effects of pH on the function of the enzyme catalase. Catalase is an enzyme that brings about the reaction by which hydrogen peroxide is decomposed to water and oxygen (Encyclopedia Britannica). The chemical reaction is shown as 2H2O2 = 2H2O + O2 (Keilin and Hartree 397). The reaction involves primarily the adsorption of hydrogen peroxide at the catalase surface. The decomposition of hydrogen peroxide by catalase is regarded as involving
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EXPERIMENT 3 Name: Flame Tests & Electron Configuration Pre-Laboratory Questions and Exercises Due before lab begins. Answer in the space provided. 1. Write electron configuration for the alkali metals Li‚ Na‚ K‚ and Rb. Li ____He 2s1_____________________________________________ Na ____Ne 3s1______________________________________________ K _______Ar 4s1___________________________________________ Rb _______Kr 5s1___________________________________________ 2. Write the electron configuration
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Hydrochloric Acid in a Given Solution by ARAKA BRAMWEL MBOGO EN251-0221/2010 TITLE: STANDARDIZATION and DETERMINATION OF THE CONCENTRATION OF HYDROCHLORIC ACID PRESENT IN A GIVEN SOLUTION Aims: To be able to standardize Sodium Hydroxide (NaOH) solution using a standard solution of Oxalic acid. To be able to prepare standard solutions. To determine the strength of a given solution of Hydrochloric acid (HCl) To analyze errors that occur during standardization experiments. Introduction:
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Background: Lipid and protein composition varies in tissue types. Results: When comparing liver‚ muscle‚ and adipose tissue‚ adipose tissue had the highest percent lipid and liver tissue had the highest percent protein. Conclusion: Based on analysis of the gels‚ the liver appeared to have the most variety in proteins when comparing liver‚ muscle‚ and adipose tissue. Significance: In order to determine the composition of a tissue‚ specific macromolecules can be extracted‚ quantified‚ and analyzed
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Unknown Lab Report April 25th‚ 2006 Introduction The purpose of this lab was to identify two unknown bacteria cultures using various differential tests. The identification of these unknown cultures was accomplished by separating and differentiating possible bacteria based on specific biochemical characteristics. Whether the tests performed identified specific enzymatic reactions or metabolic pathways‚ each was used in a way to help recognize those specifics and identify the unknown cultures
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INTRODUCTION There are many reasons for knowing the identity of microorganisms. The reasons range from the knowing the causative agent of a disease to knowing the correct microorganism in order to make antibiotics. This study was done by applying the following methods; OF Glucose‚ Indole Production‚ and Malonate Utilization test for the identification of an unknown bacterium. The methods will assist in determining the unknown bacterium found in a 55 year old male that was passing blood and mucous
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J. Chem. Chem. Eng. 5 (2011) 897-902 Remote Control of Fed-Batch Fermentation Systems Eric Moreau3‚ Floyd Inman‚ III1‚ Sunita Singh2‚ Heather Walters1 and Leonard Holmes1* 1. Biotechnology Research and Training Center‚ University of North Carolina at Pembroke‚ Pembroke‚ NC‚ USA 2. Central Institute of Agricultural Engineering‚ Bhopal‚ Madhya Pradesh‚ India 3.Université de Picardie Jules Verne‚ Amiens‚ France Received: June 14‚ 2011 / Accepted: July 11‚ 2011 / Published: October 10‚ 2011
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LABORATORY DOCUMENTATION REQUIRED FOR DATA EVALUATION USEPA Region IX Quality Assurance Office San Francisco‚ California R9QA/004.2 AUGUST 2001 CONTENTS 1.0 2.0 Introduction General Documentation Requirements 2.1 Data Package Format 2.2 Case Narrative 2.3 Chain-of-Custody 1 2 2 2 3 3.0 Organic Analyses Documentation Requirements 4 3.1 Summary of Environmental Sample Results 4 3.2 Summary of QA/QC Sample Results 4 3.2.1 Instrument Calibration 4 3.2.2 Method
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error. Dilution affected our 0.0100M Tris buffer by decreasing its pH. The buffer was originally set to a pH of 7.48‚ but the pH gradually moved down by a pH unit of about 0.1 after each dilution. This is agrees very well with what we expected prior to lab because the reading discussed how Tris buffers are affected by the concentrations. It even stated that it can be expected to change by 0.1 pH units for every tenfold dilution‚ so our buffer seemed to agree quite well with the literature.
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1M of NaOH = 23g/mol + 16g/mol + 1g/mol = 40g/mol 1M = 40g/mol dissolved in 1L and 20g dissolved in 500ml 20g of NaOH was used to prepare 500ml of 1M NaOH. Part B Molecular weight of 1M of HCl = 35.5g/mol + 1g/mol = 36.5g/mol Specific gravity = 1.19kg/L 37% HC1 × 1.19kg/L = 0.44kg/L Convert w/v to mol/v = = 12mol/L = (12mol/L) = (1M)250ml = 20.83ml ≈ 21ml 21ml of concentrated HC1 is used to prepare 250ml of 1M of HC1. Part C For 0.1N of NaOH : For 0.1N of HC1 : (1M) = 50ml of NaOH (1M)
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