We've been looking at bacteria for a few centuries now, so how do we categorize them? We love to classify things and put them in groups, so how does that work for bacteria? Well let's learn about Gram-staining, antigens, other phenotypic and genotypic properties, and we will be well on our way to understanding this process! Script by Kellie Vinal Watch the whole Microbiology playlist: http://bit.ly/ProfDaveMicrobio General Chemistry Tutorials: http://bit.ly/ProfDaveGenChem Organic Chemistry Tutorials: http://bit.ly/ProfDaveOrgChem Biochemistry Tutorials: http://bit.ly/ProfDaveBiochem Biology/Genetics Tutorials: http://bit.ly/ProfDaveBio Anatomy & Physiology Tutorials: http://bit.ly/ProfDaveAnatPhys Biopsychology Tutorials: http://bit.ly/ProfDaveBiopsych Immunology Tutorials: http://bit.ly/ProfDaveImmuno History of Drugs Videos: http://bit.ly/ProfDaveHistoryDrugs EMAIL► ProfessorDaveExplains@gmail.com PATREON► http://patreon.com/ProfessorDaveExplains Check out "Is This Wi-Fi Organic?", my book on disarming pseudoscience! Amazon: https://amzn.to/2HtNpVH Bookshop: https://bit.ly/39cKADM Barnes and Noble: https://bit.ly/3pUjmrn Book Depository: http://bit.ly/3aOVDlT