Cristina Alzandua General Biology 1401 Dr. Erin Schuenzel February 13‚ 2014 Bacterial and Eukaryotic Cell Structures All organisms are composed of cells which are characteristically microscope in size. Cell size is limited by the efficiency of diffusion across the plasma membrane. A typical eukaryotic cell is 10 to 100 micrometers in diameter opposed to prokaryotic cells are 1 to 10 micrometers in diameter. Bacterial and Eukaryotic cells display different cell organization in their size and structure
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Biology101 McDowall 10/29/2012 Escherichia Coli “The Bacterial Beast” E.coli or binomial name Escherichia coli was discovered by a German pediatrician named Theodore Escherich in 1885. Dr. Escherich originally named the bacteria‚ bacillus communis coli. After the demise of Dr. Escherich the intestinal bacteria was then named Escherichia coli after the late doctor in 1919. The bacteria Escherichia coli are classified as follows. Domain- Bacteria Kingdom- Eubacteria Phylum- Proteobacteria
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Introduction: Bacteria need specific living conditions to survive. The ideal conditions for bacterial growth is a warm‚ dark‚ and damp environment. This provides the maximum effectiveness for bacterial growth. The areas in our school that contain the most bacteria would be the water fountains because the bacteria from our mouths drop off on to it when we drink from it‚ and because water fountains are not regularly washed in comparison to weight equipment. Water fountains also provide a warm damp
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Tuberculosis (TB) is a bacterial infection spread through inhaling tiny droplets from the coughs or sneezes of an infected person. It is a serious condition but can be cured with proper treatment. TB mainly affects the lungs. However‚ it can affect any part of the body‚ including the bones and nervous system. Typical symptoms of TB include: having a persistent cough for more than three weeks that brings up phlegm‚ which may be bloody weight loss night sweats high temperature (fever) tiredness
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Eucalyptus and Colloidal Silver. Obtain two nutrient agar plates and using a permanent marker draw four quadrants on the bottom of each agar plate. Using a sterile pipet transfer 250 ml of E. coli broth to the middle of each petri dish and evenly spread bacterial culture around the agar plate. Cover and allow the culture to soak into agar for at east 15 minutes. Using sterile forceps‚ carefully place one filter disk from designated sample into the middle of each
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Weekly iLab iLab: Bacterial Growth and Controlling Bacterial Growth Scenario/Summary: This week’s experiment focuses on bacterial growth and methods to control bacterial growth. This week’s experiment will be conducted in two parts: Experiment I: Growth Media and Patterns of Growth and Experiment II: Controlling Microbial Growth. Experiment I: Growth Media and Patterns of Growth. In part I of this week’s experiment‚ you will explore the characteristics of several types of growth media. For example
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Lab‚ Week ASEPTIC TECHNIQUE AND BACTERIAL ANATOMY AND MORPHOLOGY Introduction Part I: Aseptic Technique The purpose of this experiment is to become familiar with the specific microbiological technique known as the aseptic technique‚ which is used to avoid contaminating cultures. In this case a pure culture of an unknown organism was introduced to a sterile medium of Phenol Red Glucose Broth Durham. The culture was obtained from a 52-year old male truck driver who is complaining
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BACTERIAL MENINGITIS BY JAY DOMANTAY JAY DOMANTAY ANATOMY 151 HERBERT MAY 11‚ 2009 BACTERIAL MENINGITIS A bacterial infection of blood poisoning in the meninges called bacterial meningitis affects toddlers‚ adolescents and young adults. The infection strikes nearly 3‚000 Americans each year‚ and 10 to 12% of those infected will die. Among those who survive‚ approximately 20 % live with permanent disabilities‚ such as brain damage‚ kidney disease‚ hearing loss or loss of limbs.(“Prevention
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Spontaneous bacterial peritonitis: an acute bacterial infection of ascites fluid. Although a bacterial infection the infecting agent is not easily identified. Spontaneous bacterial peritonitis is commonly seen in patients receiving peritoneal dialysis due to contamination of dialysate. Signs and symptoms: a wide range of symptoms including diarrhea‚ worsening encephalopathy‚ ascites that do not improve following administration of diuretic medication‚ worsening or new renal failure and ileus
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aureus (Staphylococcus aureus ATCC 25923‚ Gram-positive cocci‚ in purple) andEscherichia coli (Escherichia coli ATCC 11775‚ Gram-negative bacilli‚ in red)‚ the most common Gram stain reference bacteria Gram staining (or Gram’s method) is a method of differentiating bacterial species into two large groups (Gram-positive and Gram-negative). The name comes from its inventor‚ Hans Christian Gram. Gram staining differentiates bacteria by the chemical and physical properties of their cell walls by detecting peptidoglycan
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