A soluble greenish pigment is produced by
A) Serratia marcescens.
B) Pseudomonas aeruginosa.
C) Escherichia coli.
D) all streptococci.
E) Streptococcus pneumoniae.

Question

A soluble greenish pigment is produced by
A) Serratia marcescens.
B) Pseudomonas aeruginosa.
C) Escherichia coli.
D) all streptococci.
E) Streptococcus pneumoniae.

Quizplus · Accepted Answer

Pseudomonas aeruginosa is known to produce a soluble greenish pigment called pyocyanin. Serratia marcescens can produce a red pigment called prodigiosin. Escherichia coli does not typically produce pigments, and not all streptococci produce pigments. Streptococcus pneumoniae can produce a greenish discoloration on blood agar, but it is not a soluble pigment like pyocyanin.

A Soluble Greenish Pigment Is Produced by