` Study Guide for Exam 1 Chapter 1: 1. What is a “microbe”? What groups of organisms are included in this category? Microbes (microorganisms) are minute living things that individually are too small to be seen with the unaided eye the group includes bacteria‚ fungi‚ protozoa‚ and microscopic algae‚ viruses Only minority of microorganisms are pathogenic(disease-producing) 2. What are some of the benefits provided by microbes? Decompose organic waste‚ producers in the ecosystem
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Microbiology Laboratory Report Identification of Unknown Bacteria 6O BIO 251-7H1 Gram Stain Summary: Out of 28 Unknown microorganisms‚ slant 6O was randomly selected‚ and subjected to testing in order to identify it’s species. Seventeen of the unknown bacteria were classified as Gram-negative bacilli: Corynebacterium pseudodiphtheriticum‚ Enterobacter aerogenes‚ Eschirichia coli‚ Flavobacter capsulatum‚ Helicobacter pylori‚ Klebsiella pneumonia‚ Klebsiella oxytoca‚ Proteus hauseri‚ Proteus
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Microbiology Unknown 5/7/2013 Microbiology Unknown #94 The purpose of this report was to identify an unknown bacterium by applying methods that were previously learned and conducted in microbiology lab class. It is possible to identify a mixed culture by running experiments on the unknown bacteria and taking what we already know and applying it to the results. It helps to slowly eliminate any bacteria that do not correspond with the results of certain tests. An unknown test tube labeled 94 was
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ways we can differentiate the different species. Looking at these bacterium underneath the microscope is an important step to determine which kind of species it is. All cocci bacteria are not gram positive‚ but this lab will examine only this kind because of their influence in human health. Staphylococcus Aureus is a gram-positive coccus bacterium found in humans. It is frequently found on the mucus membrane in the nasal cavity and on the skin. It also infects many people in the hospital‚ also called
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Ch. 1 Prokaryotes = bacteria ‚ archaea Eukaryotes = Fungi‚ protozoa ‚ algae (Growth:: Mitosis有絲分裂) Bacterial cell → Bacillus(rodlike) ‚ cocus (spherical)‚ spiral (curved) *P.S. 有時會star-shaped or square → 出現既形式: pairs‚ chains‚ clusters cell walls of bacteria → peptidoglycan (carbohydrate & protein complex) cell walls of plant and algal cell → cellulose Growth::Binary fission = bacteria reproduce by dividing into two equal cells bacteria 吸收nutrients from dead / living organisms/ photosynthesis
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Micro Biology Lab Gram Staining Lab Report Purpose The purpose of this lab was to experiment with a staining technique called Gram Staining. Gram Stains is used to identify and classify bacteria‚ it is a differential stain that allows you to classify bacteria as either gram-positive or gram-negative. The foloowing is a breif summerary of the gram staining procedure. Apply the primary stain Apply Mordant Apply decolorizing agent Apply the secondary stain Bacteria that
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MICR 300A GENERAL MICROBIOLOGY 1 (4)‚ Fall 2014 Lecture (01) M/W 9:50 am – 11:05 pm‚ SH C244 Lab (02) M 11:15 am – 1:45 pm; Lab (03) W 11:15 am – 1:45 pm; ASCL 226 Instructor (Lecture): Dr. Moon H. Lee Office Hours: Mon/Wed 8:45 am-9:45 am; 11:15 am – 12:15 pm Office: BIOS 262‚ Tel: (323) 343-2064‚ Email: mlee@LABioMed.org Instructor (Lab): Dr. Hao Howard Xu Office Hours: Mon‚ 2:40 pm – 4 pm Office: Tel: (323) 343-2188‚ Email: hxu3@calstatela.edu
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Terms to Know Decomposer - Breakdown of dead matter and wastes into simple compounds Prokaryote – No nucleus - microscopic‚ unicellular organisms‚ lack nuclei and membrane-bound organelles Pathogen - Microorganisms that do harm Eukaryote - unicellular (microscopic) and multicellular‚ nucleus and membrane-bound organelles alcohol - archaeobacteria - Prokaryotic single-celled organisms of primitive origin that have unusual anatomy‚ physiology‚ and genetics‚ and live in harsh habitats;
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MICROBIOLOGY What is the purpose of general growth media‚ selective media‚ and differential media? Give examples of each. General Purpose Media General Purpose media is designed to grow most organisms and do not contain growth inhibitors. Standard Methods Agar and Blood Agar Bases are examples of general purpose media. Differential Media Differential media contain a component that allow an observable change when a specific chemical reaction takes place. Simmons Citrate Agar is an example
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Introduction: The gram stain is one of several laboratory procedures that can be used to narrow down the identities of unknown bacteria. Bacteria have three different shapes; cocci‚ bacilli‚ and spirilla. Since bacteria pretty much have the same reflective index as water‚ a bacteria cell must be dyed so that these shapes can be seen. Materials: Petri dish Dropper Cleansing solution Slides Bibulous paper Inoculation loop Crystal violet dye‚ Iodine Acetone Safranin Water from the sink
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