All of the following are characteristics of nonfermenters EXCEPT:
A) Thin gram-negative bacilli or coccobacilli
B) Oxidase positive
C) Indole positive
D) Resistance to a variety of antimicrobials, such as aminoglycosides, third-generation cephalosporins, penicillins, and fluoroquinolones

Question

Quizplus · Accepted Answer

Some characteristics or initial clues can indicate the presence of a nonfermenter in the clinical laboratory: thin gram-negative bacilli or coccobacilli on Gram stain,oxidase-positive reaction,although reaction can be weak and variable,nonreactivity in 24 hours in commercial kit systems for the identification of Enterobacteriaceae,no acid production in the slant or butt of TSIA or KIA,and resistance to a variety of classes of antimicrobial agents,such as aminoglycosides,third-generation cephalosporins,penicillins,and fluoroquinolones.

All of the Following Are Characteristics of Nonfermenters EXCEPT