Microbiology Chapter 1 Study Guide Essays

Microbiology Chapter 1 Study Guide Essays Microbiology Chapter 1 Study Guide Essay Microbiology Chapter 1 Study Guide Essay Chapter 1 Notes * Robert Hooke * Discovered Cellulae (Cells) * Formed Basis of Cell Theory * 1. Cell basic unit of life * 2. All living organisms are made of cells * 3. Must have living cells to make more cells * Anton Von Leeuwenhoek * Father microbiology microscopy * Discovered microorganisms (animalcules) * Disproved microorganisms were heaven sent * Put clean bowl out during rainstorm no microorganism * Let sit * Days later microorganisms formed from air * Ferdinand Cohn Discovered endospores (enable some bacteria to survive adverse environmental conditions) * Why growth occurred in experiments that disproved/proved SG * Louis Pasteur * Definitive experiment that disproved SG * Fermentation * Pasteurization: heat liquid to temp. that kills the most heat resistant pathogen but NOT all (milk) * Vaccination against Rabies (Rhabdovirus), anthrax (bacillusanthracis), Chicken Cholera (bacterium) * Silkworm industry * Disease (protozoan) was killing silk moths * Developed a method to detect diseased moths and separate * Lady Mary Montagu * Wife British Ambassador to Turkey * Developed Smallpox Observed Turkish women engrafting * Spread mild small pox to other by injecting into their veins * Patient would then be immune to smallpox * Reject because she was woman not doctor/scientist * Carl Linnaeus * Developed science of taxonomy * Scientific Nomenclature * Binomial nomenclature * Process of giving all organisms 2 scientific names * Genus species * Edward Jenner * Discovered process of vaccination * Worked with cowpox milkmaids * Milk cowpox scrap pustal scratch skin w/ needle develop mild cowpox immune to smallpox * John Snow * First epidemiologist Traced Cholera epidemic to common H2O pump that was contaminated * Ignaz Semmelweis * Puerperal Fever (child bed fever) major cause of mortality to mothers and infants * Death in midwife ward = low ; death in doctor/med student ward = high * Doctors/med students contact w/ cadavers that previously died from disease * Spread disease to living mothers * Required hand washing with chlorite of lime * Joseph Lister * Concerned with incidence of infection and mortality from surgery * Aseptic Surgery = used carbolic acid (phenol) on incision site, instruments, and bandages * John Tyndall Boiling was not sufficient to sterilize broths and agar * Tyndallization Process: * Liquid is heated to boiling (100Â °C) allowed to sit and cool for 24hours * Liquid is reheated to boiling (100Â °C) and then allow to cool and sit for another 24 hours * Repeat * Robert Koch * Developed concept of causative agent of disease (MO cause disease) * Germ Theory of Disease – developed many microbiological techniques, media and procedures * Tuberculin – thought founded vaccine (incorrect) .. use as first step to determine if person has TB * Fanny Hesse * Worked for Robert Koch Used Agar to convert liquid brother to slid medium * Koch’s Postulates (Identifying which bacteria causes which disease) * MO m ust be present in every case of the disease. Every host must have the same signs and symptoms of the disease * Isolate the microorganism and grow it in pure culture outside the host * Pure culture must be inoculated into a healthy susceptible host. Experimentally infected host must exhibit the same signs and symptoms of the disease * The Microorganism must be reisolated from the experimentally infected host and shown to be identical to the original MO * Paul Ehrlich Concept chemotherapy * Syphilis – Treponema palladium * Compound 606-Salvarsan (Arsenic containing compound) * Alexander Fleming * Accidently discovered antibiotics * Antibiotics = naturally produced compounds that inhibit the growth of other MOs * Working with Staphylococcus aureus (opportunistic pathogen- must be proper conditions to cause infection) * Most antibiotics produced by bacteria, followed by fungi * Martinus Beijerinck * Concept of Viruses * Soil microorganisms-isolated the first soil MOs * Sergei Win ogradsky * Sulfur metabolism by microorganisms * Concept of nitrogen fixation * Biochemical cycles Symbiotic relationships * Barbara McClintock * Transposons – cause Maize (jumping genes- genes move themselves and create different color kernals) * James Watson, Francis Crick, Rosalind Franklin and Maurice Wilkins * Structure of DNA * Molecular biology and genetics * Thomas Brock * Thermophilic microorganisms (high temperature loving microorganisms) * Thermus and Sulfolobus * Lynn Margulis * Endosymbiont Theory * Big prokaryotic cell engulfs little prokaryotic cell * Little survives insides but loses many functions (energy conversion, protein synthesis) * Little becomes mitochondria or chloroplast Eukaryotic Cell evolved * Carl B. Woese * Molecular systematic based on 16sRNA * Improved ability to identify MO * Stanley Prusinier * Discovered Prions * Protenaous Infectious Particles * Luc Montagnier * Discovered human immunodeficiency virus * Barry Marshall and Robin Warren * Ca usative agent of gastric peptic ulcers * MO colonize in stomach * Disbelieved b. c stomach is so acidic and has enzymes * Antibiotics cure ulcers * Demonstrated effect pharmaceutical industry practice of gastroenterology against 2 men

Scaffolding Instruction Strategies

Scaffolding Instruction Strategies Scaffolding describes how instruction is planned and delivered to students receiving special education services. Scaffolding instruction refers to specialized teaching strategies geared toward supporting learning when students are first introduced to a new subject. Scaffolding gives students a context, motivation, or foundation from which to understand the new information that will be introduced during the coming lesson. Scaffolding techniques should be considered fundamental to good, solid teaching for all students, not just those with learning disabilities or second language learners. In order for learning to progress, scaffolds should be gradually removed as instruction continues so that students will eventually be able to demonstrate comprehension independently. Scaffolding Strategies Scaffolding instruction includes a wide variety of strategies, including: Activating prior knowledge. This strategy reminds of what they have already learned, often through brief reviews. This helps reduce students anxiety as they move on to new subjects.Offering a motivational context to pique student interest or curiosity in the subject at handBreaking a complex task into easier, more doable steps to facilitate student achievementShowing students an example of the desired outcome before they complete the taskModeling the thought process for students through think aloud talkOffering hints or partial solutions to problemsUsing verbal cues to prompt student answersTeaching students chants or mnemonic devices to ease memorization of key facts or proceduresFacilitating student engagement and participationDisplaying a historical timeline to offer a context for learningUsing graphic organizers (visual aids) to offer a visual framework for assimilating new informationTeaching key vocabulary terms before readingGuiding the students in making predictions for what they expect will occur in a story, experiment, or other course of action Asking questions while reading to encourage deeper investigation of conceptsSuggesting possible strategies for the students to use during independent practiceModeling an activity for the students before they are asked to complete the same or similar activityAsking students to contribute their own experiences that relate to the subject at hand Implementing Scaffolding Strategies A deeper look shows how you can implement a few of the strategies mentioned above into your classroom. Prior knowledge: A great scaffolding technique is to ask students to share their own personal experiences or knowledge about the topic that they are learning about. Have them try and relate the topic in one way or another to their own lives. Visual aids: Visual aids like graphic organizers, charts and photographs all serve as wonderful scaffolding tools because they visually represent what the students are learning about. They are essentially the training wheels students use until they can really get a firm grasp on the information. Pre Teach vocabulary: It is essential to preteach any new vocabulary before moving on to a new subject. Simply introduce the new words through a photo or picture and put each word into context and relate it to something that students already know. Doing so will keep students interested and ready to tackle the next learning objective. Edited By: Janelle Cox