Ryan Kawiecki Ms. Lahr Ap-Biology September 17‚ 2013 Title: The Effect of Abiotic and Biotic Factors on Enzymatic Reactions Problem: Will increased pH affect the rate of reaction in an enzyme catalyzed reaction? Hypothesis: Increased pH substance will increase the rate of reaction Table: Table 1: Baseline of peroxide Time (min) Qualitative color 1:00 5 2:00 6 3:00 7 4:00 8 5:00 9 Table 2: effect of increased pH on peroxidase Increased pH by 5mL Color intensity
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Introduction Table of Contents Introduction Materials Chemicals Equipment Safety Containers Measuring Devices Other Equipment Procedure Synthesis of Aspirin Crystalizing the Aspirin Recrystallizing the Crude Aspirin Finding the Melting Point Range Safety Precautions Acetic Anhydride Sulphuric and Salicylic Acid Heating Observations Mass of Aspirin Synthesized Melting Point Calculations Percentage Yield Maximum Yield Crude Product Final Product Melting Range Percentage
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Instructions: ➢ Everything that is written in red needs to be erased or replaced by your text. ➢ Use the hand outs and photocopies I have given you as a guide‚ but do not copy everything. The IB Lab Report Title – Be certain it reflects clearly what is being done in the lab. 1. Introduction In this section‚ include the background/theoretical information on which your investigation is based. Explain the theory behind the experiment or maybe how this experiment models what you
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used in engines to convert the linear thrust of the pistons into useful rotary motion. In this lab we will measure the acceleration of the piston of a lawn mower engine at various speeds. The results exemplify a simple relation between speed and acceleration for kinematically restricted motions‚ which will discover. An adjustable slider-crank apparatus and a computer simulation will show you some effects of changing the proportions of the slider-crank
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Melting point 1. What two effects do impurities have on the melting point of an organic compound? Soluble impurities affect the melting point of a solid in the following manner. a. The presence of an impurity in the molten compound reduces its vapor pressure thus lowering the melting point of the compound. b. Broaden the melting point range. 2. For what tow purpose are melting points routinely used a. To determine the identity of an organic solid. b. To determine the purity of an organic solid
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Lab 3 – Biodiversity Demonstration 1: Interdependence of Species Table 1: Interdependence of Species Results Round Species Missing (Bead Color and Name) 1 Blue / Humans 2 Red / Flowers 3 Yellow / Bees 4 N/A POST LAB QUESTIONS 1. Explain how the ecosystem was affected by the missing species for each round of the demonstration. a. Round 1 = Without humans then all progress cease to exist and everything will go in reverse. Humans run pretty much everything and if we just eliminated humans then only
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Lab #1 – Assessment Worksheet Performing Reconnaissance and Probing Using Common Tools Course Name and Number: _____________________________________________________ Student Name: ________________________________________________________________ Instructor Name: ______________________________________________________________ Lab Due Date: ________________________________________________________________ Overview In this lab‚ you explored the common tools available in the virtual lab environment
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property. It does not contain the ideas or writing of other individuals/authors. _________________________________________________________ AuthorDate ____________ Lab Section # ___________________________ Lab Partner BIOL 1208 Writing Assignment 1 Results Worksheet These are to be written individually even if you worked in a group. Lab Topic: ________________________________________________ Introduction: What was your null hypothesis? be specific A change in temperature in the reaction of catechol
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Lab: Comparison of Three Isomers of Butanol Pre-lab: 1. Write the general reaction of an alcohol and HCl. 2. What would the solubility be of an alcohol in water. 3. What would the solubility be of an alkyl halide in water? 4. What is the purpose of KMnO4 in the reactions? Safety: Concentrated hydrochloric acid is corrosive and the vapour is very irritating to the respiratory system. Avoid contact with skin‚ eyes‚ clothing‚ and the lab bench. Wear eye protection and a lab apron.
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Evolution Lab The finches on Darwin and Wallace Islands feed on seeds produced by plants growing on these islands. There are three categories of seeds: soft seeds‚ produced by plants that do well under wet conditions; seeds that are intermediate in hardness‚ produced by plants that do best under moderate precipitation; and hard seeds‚ produced by plants that dominate in drought conditions. Evolution Lab is based on a model for the evolution of quantitative traits–characteristics of an individual
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