Please answer the following questions. Your answer for each question should be a minimum of 150 words (half page). Please number your answers with the number of the question you are answering. 1. Koch was the first scientist to prove that bacteria actually cause disease. He scientifically demonstrated that a disease is caused by a particular organism. He created four general guidelines to aid in identification of disease causing pathogens. These guidelines developed from his work with purified
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rate change over time? How does this compare to a real enzyme? The enzyme’s rate did change over time. This compares to a real enzyme because an enzyme’s job is to speed up the reactions and as time allotted. That did happen since the enzyme in our lab was able to make more chainobeads as time progressed. 4. Graph 5. Table Chainobead Construction Time Part A 15 Seconds 6 30 Seconds 12 60 Seconds 20 120 Seconds 29 Part 1B: 1. The results of the 120 seconds with the non-pop beads added to the mix
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Determining Stoichiometric Ratios: NaOH and HCl & NaOH and H2SO4 Reactions Contents Introduction 3 Materials & Procedure 4 Raw Data 8 Processed Data 15 Graphs 16 Conclusion & Evaluation 17 Introduction Background Information Stoichiometry is a critical component in chemistry‚ and helps in understanding the quantitative relationship between the number of moles of reactants and products in a reaction. Objective In this experiment‚ the reactions
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Sabrina Shaw Hunter 2A IB History of the Americas HL 7 November 2012 Paper 3 Guide: Mexican Revolution Bullet Points: Defined and Summarized: 1. Causes of the Mexican Revolution: social‚ economic‚ and political; the role of the Porfiriato regime * Porfirio Díaz was the dictator of Mexico from 1876 to 1910. His regime is known as the Porfiriato regime. Díaz’s social ideologies and aims were to divide and rule‚ obtain absolute power Díaz’s methods were the Pan o Palo policy and the spoil
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IB Learner Profile: My Personal Traits Hi‚ my name is___________________‚ and the three IB Learner Profile Traits I will be talking to you about today are my two best traits and my worst trait. So‚ my two best traits are Communicators and Open-Minded because I like to talk a lot and i also like to think about ideas people give and compare them to my own. My worst trait is Balanced because I am a terrible time-management person and am trying to release that habit. So I chose Communicators as my
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Problem What effect does the different concentration of hydrochloric acid have to the rate of diffusion of agar that is dissolved with sodium carbonate and phenolphthalein? Introduction Diffusion is a process where the molecules intermingle as a result of their kinetic energy of random motion and is the net movement of like molecules down their concentration gradient‚ which is the energy inherent in their constant molecular motion makes them collide and careen outward from the region of higher
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Purpose: To find out the densities and to find out the name of the unknown metals. (Based on the extensive and intensive properties) Check up the words mass‚ volume‚ density‚ extensive properties‚ and intensive properties. Where do the units for mass and volume) come from and what do they mean? What is the density of distilled water? What is Archimedes principle? Does temperature affect the density of a solid? Liquid? Gas? Materials: Safety glasses‚ 10‚ 25 or 50 mL graduated cylinders
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Experiment 21: Salmonella and food contamination Purpose /Objective Objective: To test salmonella in spinach sample over five lab periods. Food contamination of salmonella can cause serious illness. Only small numbers of salmonella need to be found for a food product to be considered contaminated. Tests used Pre-enrichment- lactose broth Selective enrichment broth- with Tetrathionate Brilliant Broth Selective Plating- Brilliant Green Agar Isolation of salmonella conformation- is preformed
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CHAPTER 1 - Learning Objectives 1. What is international business? 2. What are the key concepts in international trade and investment? 3. How does international business differ from domestic business? 4. Who participates in international business? 5. Why do firms internationalize? 6. Why study international business? QUESTION • International business is defined as the performance of ________ activities by firms across national borders. • A) marketing and fiduciary • B) trade and investment
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MBK – Lab Report Name: ____________________ Section: ___________________ Module 3‚ Experiment 3: Aseptic Technique & Culturing Microbes Part 3: Generating Microbial Cultures: Observe your culture tubes after 24 hours to assess the growth patterns of all tubes. If there is no observable growth allow the tubes to incubate an additional 24 hours. Record your observations here. Attach a picture of you incubator in this space. Questions: A. What is
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