Lab Practical One Report Unknown Bacteria Staining Gram Acid Fast Spore The first practical for microbiology was staining of an unknown bacteria. Professor Goode provided an unlabeled bacteria in which each individual were to conduct gram‚ acid fast‚ and spore staining tests from memory. When the gram staining test was conducted a positive results was obtained. When views on oil bacteria appeared purple and rod-like. I noted this result and looked at the lab key to see what the results narrowed
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Gram Staining Lab Introduction Gram staining is a very important technique used in biology labs all over the world. It is a technique used to differentiate types of bacteria using certain physical and chemical characteristics of their cell walls. Gram positive bacteria (which show up purple after the gram staining process) have a very thick layer of peptidoglycan where gram negative bacteria (which show up pink after the gram staining process) have a much thinner layer of peptidoglycan. One thing
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Meiosis and mitosis are both types of cell division. Cell division is the reproduction of cells‚ and requires the duplication of chromosomes. Mitosis takes place when the nucleus divides. Meiosis is a type of cell division that produces haploid gametes in diploid organisms. Mitosis and meiosis are two very different processes. While meiosis only requires the cell to divide twice‚ the cell only divides once during mitosis. This causes meiosis to produce four cells and mitosis to produce two cells
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Introduction Gram staining was developed by Christian Gram in the 1800’s‚ a Danish bacteriologist. (Smith and Hussey‚ 2005) It was the first differential staining technique and most common used in microbiology. Furthermore‚ bacteria are transparent and cannot be seen through the microscope. For that reason‚ Gram staining is an important tool for distinguishing between two main types of bacteria Gram-positive and Gram-negative. The Gram stain differentiates the Gram positive and gram-negative on
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Life Science Lab. A. Arnold Tuesdays @ 2:30 September 30th‚ 2011 Lab Report: Nuclear and Cell Division. PART A: Stages of Mitosis in my own words. 1. Interphase: DNA has formed already‚ but it remains in the simple form of chromatin. Chromatins are structures that are loosely coiled in the cell.3 I also observed during my lab that this was the only stage where I could still see a nucleus and nucleolus intact within the cell; this is because it’s the only stage where the nuclear membrane has
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As mentioned above‚ bacterial growth rates during the phase of exponential growth‚ under standard nutritional conditions (culture medium‚ temperature‚ pH‚ etc.)‚ define the bacterium’s generation time. Generation times for bacteria vary from about 12 minutes to 24 hours or more. The generation time for E. coli in the laboratory is 15-20 minutes‚ but in the intestinal tract‚ the coliform’s generation time is estimated to be 12-24 hours. For most known bacteria that can be cultured‚ generation times
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to each other. Important for mitosis and meiosis. The relationship is that each chromosome consists of chromatin. Once replicated‚ a chromosome consists of two identical chromatids‚ which are attached to a section of the DNA called the centromere. 3. List the phases of mitosis and describe what is happening in each phase. Mitosis‚ results in identical cells. 46 chromosomes. It is important for: maintenance‚ repair‚ growth‚ and regeneration. The phases of mitosis are prophase‚ metaphase‚ anaphase
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three of the reasons educators need to observe. Discuss the importance of each part of the observation cycle. Based on the challenges of observing and recording discussed in class describe two you have experienced and what you did to over come them. Educators need to observe for several reasons. A few reasons include‚ health and safety‚ plan individual and classroom curriculums‚ self evaluation and asses/evaluate the children’s development. We observe the environment for hazards to ensure
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How To Prepare Yourself For A Root Canal Are you about to go to the dentist for a root canal? This dental procedure is one that you want to be well prepared for before you show up to the dentist office. What you do before the root canal can definitely have an impact on how the procedure goes. Here are some tips for preparing for your root canal. Don’t Be Afraid To Ask Questions Getting a root canal may feel a bit nerve-wracking and cause you to avoid talking about the procedure before you have it
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Case Analysis of “The Tip of the Iceberg” Date: March 22‚ 2010 In David Hutchens book‚ “The Tip of the Iceberg” he tells the story of the penguins and walruses coming together as a collaborative business unit for the greater good of clams. This story touches on two key components that are seen in everyday businesses. These two key components are system management‚ and adapting to change. The primary system described in the story was for the penguins to share their iceberg that they resided
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