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

BIOS 242 Fundamentals Of Microbiology With Lab (BIOS242) BIOS 242 Week 1 – 2023/2024

Lab5:DifferentialStaining LearningObjectives: • Explaintheprincipleofdifferentialstaining • Applydifferentialstainingtoidentifybacteria Differentialstainusestwoormorestainstospecificallystaincertainstructuresorcellularcomponentswhichcannotbeeasilyobservedusingsimplestains.Differential staining principles are based upon the specific chemical nature and composition of cellular components and therefore, different structures areobservedusingdifferentstainsandstainingprocedures.Differenti...

Lab3:Microscopy-ObservationofCells LearningObjectives: • Usethecompoundlightmicroscopeforobservationofcells. • Identifydifferenttypesofbacteriabasedontheirshapes. • Identifyavarietyofeukaryoticcells. Introduction: Exercise2:ObservationofDifferentTypesofBacteriaMaterials: Compoundmicroscope,immersionoil,lenswipes,preparedslidesofvariousbacteria-Rods,cocciandspiral Method: 1. Obtainthepreservedslideofabacteria. 2. UseAppendixAandfollowtheinstructionsonhowtouseaMicroscope. 3. O...

BIOS 242 Week 1 Lab 1 Culture Transfer Techniques

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...

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...

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 ...

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

BIOS 242 Week 1 Lab 2 Isolation of Pure Cultures

Lab5:DifferentialStaining LearningObjectives: • Explaintheprincipleofdifferentialstaining • Applydifferentialstainingtoidentifybacteria Differentialstainusestwoormorestainstospecificallystaincertainstructuresorcellularcomponentswhichcannotbeeasilyobservedusingsimplestains.Differential staining principles are based upon the specific chemical nature and composition of cellular components and therefore, different structures areobservedusingdifferentstainsandstainingprocedures.Differenti...