Experiment 9: Growth curve of Serratia marcescens Abstract Bacteria grows by binary fission. The aim of this experiment is to follow the growth of Serratia marcescens in nutrient broth at 37oCby recording the changes in turbidity (cloudiness) by measuring the absorbance of visible light (600 nm) and also to prove that there is an increase in the cell number and not just in mass during the growth. In the experiment we measure the full growth curve of Serratia marcescens by measuring the absorbance
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Bacteria Growth Requirements Microbiology Life as we now it has ended. What is left you ask? Well it is said the only thing that could survive an incident that could end our known way of life is a roach and a pack or Twinkies. In truth the great survivor would be microorganisms. Microorganisms can survive where most cannot due to their size‚ nutritional needs‚ energy requirements‚ and are very good at adapting to different environments (Black 2008). Microorganisms require two things to
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Study of Bacterial Growth and Resistance Level to Certain Antibiotics INTRODUCTION Escherichia coli—better known as E. coli—is a gram negative‚ rod shaped bacteria. It is relatively harmless‚ but can occasionally cause food poisoning. It can also provide Vitamin K2. It prevents the establishment of pathogenic bacteria‚ and is associated with or found in the intestinal organ. The antibiotic that E. coli is resistant to is Penicillin. Bacillus subtilis—better known as B. subtilis—is known as
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The Effects of Antibiotics on Bacterial Growth Biology II 1996 Bacteria are the most common and ancient microorganisms on earth. Most bacteria are microscopic‚ measuring 1 micron in length. However‚ colonies of bacteria grown in a laboratory petri dish can be seen with the unaided eye. There are many divisions and classifications of bacteria that assist in identifying them. The first two types of bacteria are archaebacteria and eubacteria. Both groups have common ancestors dating to more
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Effects of Music on Bacterial Growth Kira Lewitt and Kaitlyn Carroll December 2014 Chemistry 1B Grady High School Table of Contents 1. Introduction 2. Materials/ Method/ Procedure 3. Data/ Observations 4. Discussion of Results 5. Conclusion 6. Practical Application 7. Future Expansion 9. Bibliography Introduction Question: What genre of music affects the growth of bacteria the most
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Microbiology (Lab Report) Closed system growth curve Closed System Growth Curve Lab Report PURPOSE Bacteria grown in a closed system show a specific growth pattern called the growth curve which consists of four phases. The lag phase‚ which is a period of slow growth; exponential phase‚ period of maximum growth; stationary phase‚ where nutrients become the limiting factor making the growth rate equal to the death rate and the death phase where organisms die faster than they are replaced. It
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MICROBIOLOGY COURSEWORK The effect of antibiotic concentration on bacterial growth Introduction Null Hypothesis- Increasing the antibiotic concentration has no effect on bacterial growth. Experimental Hypothesis- Increasing the antibiotic concentration decreases bacterial growth. Scientific Theory Bacteria are prokaryotes and can be identified by their shape. Spherical bacteria are called cocci‚ rod shaped bacteria are called bacilli‚ spiral shaped bacteria are called spirilla and
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growing phase of the business during which the business plans and strategies are finally executed and the business organization comes into existence. This is the stage where the business is not generating revenue but trying to establish itself in the market and attract a stable set of investors and customers. This is the stage where the business has to invest a lot of resources in creating the basic infrastructure and then marketing and advertising itself in the market. This is the phase during which
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Name Lab‚ Week # 3 Experiment : BACTERIAL GROWTH AND CONTROLLING BACTERIAL GROWTH Introduction <Include purpose of lab experiment> <brief summary of topic investigating and case studies > <state major finding> Procedure < Include information that the reader would need to repeat your experimental procedure. Do not include any observations or results in this section> Observations and Results Part I: Bacterial Growth Result + or - Appearance after Incubation Gram Stain N/A OF Glucose Broth
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Four Phases of Emergency Management In this section‚ the four phases of emergency management will be defined: mitigation‚ preparedness‚ response and recovery. Mitigation Over the last decade the social and economic costs of disasters to the United States‚ and throughout the World have grown significantly. During the 1990’s‚ FEMA spent over $25.4 billion to provide disaster assistance in the United States. During that decade‚ the economic toll of natural disasters‚ world wide‚ topped $608 billion
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