BIOL 2051 : Micro Final Exam
Document Summary
Exp 22, 23, 24, 25, 26, 27, 28, 33. Homofermentative product lactic acid only, heterofermentative produce ethanol, Produces co2 and ethanol from sugar, used in baking, beer and wine. Some fastidious, grow on blood agar and cause hemolysis. G+, catalase , most facultative anaerobes, some microaerophillic or obligate anaerobes. Some fastidious, grow on blood agar -beta hemolysis- may cause strep throat. G-, oxidase -, amylase -, caseinase -, gelatinase , cysteine desulfhydrase - Produces amylase to break (1,4) glycosidic bonds in starch. Isolated from sugarcane piles, breaks down (1,4) glycosidic bonds in cellulose. Indole negative, mr negative, vp positive, citrate positive (produce citrate permease) Fix nitrogen aerobically using nitrogenase (n2 to nh3) Obligate anaerobe, lives in a commensalistic relationship with staphylococcus epidermis. Media to know (selective ingredients, differential ingredients, test it was used for, reagents to add, organisms to know, significant ingredients, what results look like) : Can be used to test for amylase production.
