Question

organism Characteristics Gram negative bacilus, acid-fast negative, ferments galactose Alcaligenes faecalis catalase positive, motile, alkaline with litmus milk, not hemolytic, H.S negative Citrobacter freundi Gram negative bacilus; acid-fast negative, does not ferment galactose, catalase positive, non-motile, acid produced in litmus milk, not hemolytic, Has negative Gram negative bacilus, acid-fast negative, does not ferment galactose, fluorescens catalase positive, non-motile, alkaline in litmus milk, hemolytic, HS negative Gram positive oval coccus found as streptococci, acid-fast galactose fermentation negative, catalase negative, non-motile, acid in litmus milk, hemolytic, Has negative Mycobacterium Gram positive club-shaped bacili, acid-fast positive, galactose smegmatis fermentation negative, catalase-negative, non-motile, alkaline in litmus milk, catalase positive, not hemolytic, His negative Mycobacterium leprae Gram positive club-shaped bacili, acid-fast positive, galactose fermentation negative, catalase-positive, non-motile, alkaline in litmus milk not hemolytic. Has negative Corymebacterium Gram positive club-shaped bacili, acid-fast negative, galactose fermentation positive, non-motile, acid from litmus mik, catalase positive, not hemolytic, H S negative Aeromonas hydrophila Gram negative bacili, acid-fast negative, fements galactose, catalase positive, motile, acid from litmus mik, not hemolytic, H,S positive Create dichotomous key that will be used in identification of these microorganisms.

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Answer #1

Aama Stain POSITIVE h, S 2- Cocc Litmus ck C+ JEuATIVE Alkaline Catalase Cormebacferiun Moti L Moile Nen-Manksince the gram negative bacteria can be differentiated with out the help of hemolysis and galactose fermentation, i havent included those 2 properties in my answer. There are multiple ways to answer this. My answer is the simplest way to differentiate them.

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Create dichotomous key that will be used in identification of these microorganisms.
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