Chapter 25 Pre-Test Question 1 Part A Miller and Urey’s experiments that attempted to recreate conditions on early Earth were significant because _____. Hint 1. They gave credence to the idea of abiotic synthesis. ANSWER: they showed how polymers could form spontaneously on a clay substrate they produced the first protocells they showed how radiometric dating could be used to give the absolute ages of rocks and fossils proved the endosymbiotic theory they showed that organic
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Statement of Purpose Some people view biological science as an area of science which is boring; requiring intensive memorization and less logical reasoning. True to my heart‚ my view towards biological science was no difference! It was not before my higher secondary school classes when I first realized the beauty of this scientific arena. I had my first glimpse at molecular biology then. But that brief introduction to molecular biology was enough to compel me to the idea that I want to spend my
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Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent to an instructor
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STDs Sexually transmitted diseases have been a major public health problem in the United States of America for many years now. The numbers of infections that have been sexually transmitted have sky rocketed up through the years and have been consistent through the past decade. Over the past decade‚ there have been around twelve million infections occurring annually throughout the United States of America. The reckless people of our nation have continued to spread the disease although through
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At the beginning of the semester‚ samples of bacteria were obtained from various sources. Two bacterial colonies were isolated from plates that were incubated in the lab and these bacteria became the basis for this project. The bacterial cultures were maintained and used for various physiological‚ cultural‚ and biochemical tests and observations over several weeks. The purpose of culturing bacteria over half the course of the semester was to learn various techniques used in microbiology labs and
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* Microbiology: Study of microorganisms Most microorganisms are pathogenicFalse The majority of bacteria are harmless True Total number of bacterial species: about 10 million to a billion What is a microorganism? An organism or virus too small to be seen without a microscope. (Smaller than 0.5 mm) Ex: Bacteria‚ Fungi‚ Protozoa‚ Algae‚ and Viruses Microbiom: collection of microbes Human cells vs. Microbial cells = 1:10 Which statement about Michaelangelo is not correct? A. He was
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Proteus vulgaris Antibiotic Sensitivity Assay By: David Toelkes BIO 225 June 12‚ 2012 Lab Partners Alexis Blackmon Cheryl Cardiff Megan Dereani Logan Freeman Abstract Development of bacterial resistance to the antimicrobial drugs identified the need to determine a given bacterium’s susceptibility or resistance to a given drug which prompted W. M. M. Kirby and A. W. Bauer to develop a single disk method for susceptibility testing. This experiment used the Kirby-Bauer disk diffusion
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Bacteria can be distinguished from one another by their morphology (size‚ shape‚ and staining characteristics). In this lab experiment‚ bacterial morphology was examined by observing both stained and unstained organisms. A wet mount is a preparation process where a live specimen in culture fluid is placed on a slide and the organism is free to move about. In the wet mount slides provided via LabPaq software with cheek‚ dental plaque‚ and yeast specimens were observed. The wet mount preparations
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Staphylococcus aureus: From a Spot to the Hospital The hospital is silent this morning‚ as the sun breaks through the blinds and casts off all the silver objects in the room. My hospital bed is uncomfortable‚ and it makes me yearn for my 100-year-old mattress and many unnecessary plush-pillows. The smell of bleach and cleanliness lingers in my nose and almost makes me feel sicker. How did I end up here? Well‚ that is not an adrenaline rushed injury or a freak accident‚ but something that started
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2.4 Intervention products During both the run in period and the intervention period‚ the participants received four slices of bread (100 gram) and two servings of RETC (33.4 gram) each day. The WGW products have a whole grain content of 98.4 gram in total each day. For the weekends small buns‚ current buns and current bread were provided to the participants. The WGW and RW have a similar energy and macronutrient composition‚ although the fibre composition is different. The nutritional facts of the
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