cell wall and are not washed away easily. 4. Attach photos on JPEG format showing a gram positive and gram negative bacterial sample showing their gram staining reaction. Give the name of the bacterial cells‚ shapes and arrangement. (9 marks) Bacillus cereus: Rod shaped and chain arrangement‚ Gram positive http://aapredbook.aappublications.org/content/1/SEC131/SEC143/F178.large.jpg Neisseria gonorrhoea: Coffee bean shaped and diplococcus arrangement‚ Gram negative http://upload.wikimedia
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Exercise 3.9 Endospore Stain (Differential Stain) Eula Lewis Bio 2921 February 27‚ 2013 Zere Ezaz‚ Ph. D. Objective: 1. To learn to endospore stain 1. To distinguish endospores‚ free spore‚ and vegetative cells Theory: A dormant form of bacterium that allows it to survive poor environmental conditions are called endospores. Their tough outer covering is made of keratin and is also the reason they are resistant to heat and chemicals. The strength of keratin also makes it resist
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Review all chapters in your exercise manual beginning with the introduction INTRODUCTION: (Covered 9.4.14 II Week 1) Biosafety levels1: basic level of containment. Hand washing or wearing gloves 2: Appropriate for working with human body fluids. Autoclave‚ sharps containers‚ lab coats 3: appropriate for working with pathogens that can be transmitted via respiratory route. Self-closing‚ double doors and sealed windows 4: Highest level. Aerosol pathogens; pathogens with no vaccine/treatment. Separate
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increased‚ and high antimicrobial activity (MIC‚ ∼10 μg/ml) was observed in methanol extracts of the inoculated red soils. Antibiotic-producing microorganisms whose numbers increased during incubation included actinomycetes‚ Lysobacter spp.‚ and Bacillus spp. The actinomycetes produced actinomycin C2 and actinomycin C3. No myxobacteria or lytic bacteriophages with activity against either M. luteus or S. aureus were detected in either soil before or after inoculation and incubation. These results
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Methanolic Extract of Eggplant (Solanum melogena) Peel as a Dye Pigment in Differential Stains Azucena‚ Alexis G. An Official Entry to 2010 Regional Science Fair Cluster 2 Physical Science- Individual Negros Occidental National Science High School January 13‚ 2011 Ma. Melanie P. Romero Research IIB Adviser APPROVAL SHEET The research paper attached hereto‚ entitled‚ “Methanolic Extract of Eggplant (Solanum melogena) Peel as a Dye Pigment in Differential Stains”‚ prepared and submitted
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04/29/2013 G-Unknown code Gram Positive-Micrococcus luteus Gram Negative- Klebsiella pneumoniae Unknown Paper The unknown project was a very good realization of me and my partner going out by our selves. The very first day of the Unknown project I was acquainted with Denise who was very friendly and was very nice as far as assisting me in the project. The first day we were introduced too various different forms of the unknown such as broth‚ Blood agar plate‚ MSA plate
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the brain with such odors (Hallon‚ 254). Although many people thought those thoughts most people believed it was God punishing them for sins such as greed and hersery (Black Death). Today scientists understand that the Black Death is spread by a bacillus called yersinia pestis (Black
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a clear zone around the growth produce the exoenzyme amylase which cleaves the starch into di- and monosaccharide’s. These simpler sugars can then be transported into the cell to be catabolized. Bacillus species are known to produce the exoenzyme‚ amylase. In our experiment‚ we concluded that Bacillus cereus from soil can hydrolyze starch in order to use these starches as a carbon source and use it. But Staphylococcus cannot. Blood agar is an Enriched Media which have been supplemented with
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Kobayashi et al.‚ 1997‚ also have reported the use of Bacillus chitinase for the production of ulcerative colitis and other
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Bordetella pertussis is the cause of pertussis which is also known as whooping cough. It is a gram negative pleomorphic bacillus. Pertussis is highly contagious and can be deadly to newborn infants because they do not have the immunity to protect against this disease. Every year there are outbreaks of pertussis especially in the high school age children‚ even though most have had the Tdap (tetanus‚ diphtheria and acellular pertussis) Vaccine. Humans are the only host to the Bordetella pertussis bacterium
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