Bios242 week 1 lab 1 - Study guides, Class notes & Summaries

Lab2:TechniquesforIsolationofPureCultures LearningObjectives: • Isolatepureculturesfromamixedpopulationofmicroorganismsusingaseptictechnique. • Learnthestreakplatemethod Introduction: Inthislaboratoryexercise,coloniesfrommixturesofEscherichiacoliandSerratiamarcescenswillbeisolatedusingthefour-waystreakmethodassummarizedbelow(Figure1). We will need this image from Materials: A24hournutrientbrothmixtureofSerratiamarsecens(S.marsecens)andEscherichiacoli(E.coli),twonutrientagarpl...

Lab13:BacteriaoftheDigestiveSystem LearningObjectives • Identifyhowselectiveanddifferentialmediacanbeusedintheidentificationofbacteriathatcaninhabit the digestive tract. • Identifythegrowthofsamplesofpresumedfecalbacteriafromrestroomswabs. Introduction The human intestinal tract is inhabited from birth by a variety of microorganisms acquired, at first, fromthe mother. Later, microbes are ingested in food and water, and from hands and objects placed in themouth. Many of those do not ...

Lab9:FoodSafety LearningObjectives: • Tolearnabouteffectivenessofhandwashing • Tolearnaboutcleaningproduce • Tolearnaboutappropriatelystoringfoods GI infections occur due to contaminated food and water. Clean drinking water, washed produce,appropriatestorageoffoodandsimplepersonalhygienehabitssuchashandwashinghelptremendouslyin reducing the incident of GI infections. In this lab, we will test the effectiveness of some of thesepractices. Exercise1:PersonalHygiene-ImportanceofHandwas...

LabReport: Disinfectants and Antibiotics Purpose: Describe thepurposeofthe lab. Exercise1:Disinfectants Organism1: Besuretorecordthechemicalorproductyoutestedandcompletethistablebyobtainingdatafromothergroupsinyourclass Organism2: Besuretorecordthechemicalorproductyoutestedandcompletethistablebyobtainingdatafromothergroupsinyourclass Questions: 1. Wasyourtestchemicaleffective?Brieflyexplain. 2. Wasyourtestchemicalmoreeffectivethatthelabdisinfectant?Brieflyexplain. 3. Wasyourtestche...

Lab9:FoodSafety LearningObjectives: • Tolearnabouteffectivenessofhandwashing • Tolearnaboutcleaningproduce • Tolearnaboutappropriatelystoringfoods GI infections occur due to contaminated food and water. Clean drinking water, washed produce,appropriatestorageoffoodandsimplepersonalhygienehabitssuchashandwashinghelptremendouslyin reducing the incident of GI infections. In this lab, we will test the effectiveness of some of thesepractices. Exercise1:PersonalHygiene-ImportanceofHandwas...

Lab13:BacteriaoftheDigestiveSystem LearningObjectives • Identifyhowselectiveanddifferentialmediacanbeusedintheidentificationofbacteriathatcaninhabit the digestive tract. • Identifythegrowthofsamplesofpresumedfecalbacteriafromrestroomswabs. Introduction The human intestinal tract is inhabited from birth by a variety of microorganisms acquired, at first, fromthe mother. Later, microbes are ingested in food and water, and from hands and objects placed in themouth. Many of those do not ...

Lab11:BacteriaoftheSkin LearningObjectives: • Identifythegrowthofskinbacteriaondifferenttypesofselectiveanddifferentialmedia. • Identifypathogenicfromnon-pathogenicbacteria Introduction: Our skin forms the first line of defense. It has several characteristics that makes it an inhospitable environment for the growth of most microbes. Some of thesecharacteristics of skin include: high percentage of salt, low pH from 4-5.5, sebum, antimicrobial chemicals; an outer layer of dead skin cell...

BIOS 242 Week 1 Lab 2; Isolation of Pure Cultures

Lab13:BacteriaoftheDigestiveSystem LearningObjectives • Identifyhowselectiveanddifferentialmediacanbeusedintheidentificationofbacteriathatcaninhabit the digestive tract. • Identifythegrowthofsamplesofpresumedfecalbacteriafromrestroomswabs. Introduction The human intestinal tract is inhabited from birth by a variety of microorganisms acquired, at first, fromthe mother. Later, microbes are ingested in food and water, and from hands and objects placed in themouth. Many of those do not ...

Lab11:BacteriaoftheSkin LearningObjectives: • Identifythegrowthofskinbacteriaondifferenttypesofselectiveanddifferentialmedia. • Identifypathogenicfromnon-pathogenicbacteria Introduction: Our skin forms the first line of defense. It has several characteristics that makes it an inhospitable environment for the growth of most microbes. Some of thesecharacteristics of skin include: high percentage of salt, low pH from 4-5.5, sebum, antimicrobial chemicals; an outer layer of dead skin cell...