Question

physical characteristics of Providencia stuartii : 1)shape - bacillus? 2)arrangement- single, tetrad or something else? 3)gram status- positive or negative? 4) Acid fast- yes or no? 5) capsule- yes or no? 6) produce endospore- yes or no?

Environmental condition required for growth- Oxygen - facultative anaerobe or aerobe? Temperature- mesophile , thermophile ? pH- acidophile, neutralophile or alkaliphile?

Answer 1

Ans. Providencia stuartii shape - curved, or straight or bean shaped ,& also bacilli ( rod shape) comes in many varients & are widely spred .

Arrangement: single but in colonies

Gram status - gram negative bacillus because that is commonly found in soil & water .

Acid fast - AF staining test : negative

Capsule : no

Produce endospore: no

Environmental conditions required for growth : it can grow in facultative anaerobic condition and Simmons citrate agar .

Temperature : 37° C ,or mesophile temperature range

PH- varing ph , it can form biofilm over a large range of ph over 6-9 ,and can consolidate at 5 and PH > 8 can directly attached to urinary catheter .