A microbiologist is reading the plates from a sputum culture. There is growth only on the chocolate plate. When the microbiologist takes off the lid of the culture plate, he notices a distinct "mousy" smell. What organism can this be?
A) Proteus mirabilis
B) Haemophilus sp.
C) Staphylococcus aureus
D) Pseudomonas aeruginosa

Question

Quizplus · Accepted Answer

The growth only on the chocolate plate suggests that the organism is a fastidious organism, which means it requires special growth conditions such as factors present in blood, which are present in the chocolate agar. The "mousy" smell is specific to Haemophilus sp.

A Microbiologist Is Reading the Plates from a Sputum Culture