Microbiology barbosa - Study guides, Class notes & Summaries

What are fastidious organisms? - ️️any organism that has a complex nutritional requirement, and will only grow when specific nutrients are included in its diet How is the blood agar selective? - ️️The sheep's blood provided the growth factors for fastidious pathogens How is the blood agar differential? - ️️based on the bacteria's ability to cause hemolysis of blood cells How is the MSA test selective, and what type of bacteria growth does it NOT inhibit (allows to grow)?...

virus's ability to infect an animal cell depends primarily upon the - ️️presence of receptor sites on the cell membrane a mutation that inactivates the gene that expresses the repressor of the lac operon results in - ️️continuous transcription of the structural genes Continuous cell lines differ from primary cell lines in that - ️️continous cell lines can be maintained through an indefinite number of generations which of the following is not a product of transcription? - ️...

EMB (eosin methylene blue) agar - ️️selective and differential, inhibits growth of gram-positive and permits the differentiation of gram negative intestinal pathogens based on lactose fermentation (E. coli-dark center metallic green, E. aerogenes-mucoid and large, S. enterditis) MAC (MacConkey's) agar - ️️selective and differential, crystal violet and bile salts to inhibit gram positive, those that can ferment lactose acidically appear red, negative appears colorless; determined...

binomial nomenclature - ️️-naming system by Linnaeus (1735) -two names: genus and specific epithet prokaryotic bacteria - ️️-single celled -prenucleus -divide by binary fission -peptidoglycan cell wall -nutrition from organic or inorganic compounds - prokaryotic archaea - ️️-lack peptidoglycan cell wall -live in extreme environments - (methanogens, halophiles, thermophiles) eukaryotic fungi - ️️-distinct nucleus -chitin cell wall -absorb organic chemicals for energy ...

Microbiology Lab Midterm Barbosa Exam Questions And Improved Responses parfocal - answersonly a little fine adjustment is needed to bring a specimen into focus when switching from low to high power iris diaphragm - answersused to vary the illumination of the object being viewed rheostat - answerschanges the intensity of the light beam aseptic technique - answersprevent the contamination of the culture and spreading of microorganisms into the environment How can bacterial culture m...

Microbiology LAB UTC - Barbosa Exam Questions And Improved Responses What does MSA stand for? - answersMannitol Salt Agar What does MAC stand for? - answersMacConkey's Agar What does EMB stand for? - answersEosin Methylene Blue Agar How is the MSA test selective, and what type of bacteria growth does it NOT inhibit (allows to grow)? - answersIt contains mannitol (sugar) which is used for fermentation The high salt concentration inhibits the growth of most bacteria other than st...