When Petrus' grandmother's test results are sent to you, you discover that while her blood work is normal, her urine has Gram-negative bacilli in it. Based on this, you know that the cells are
A) stained blue and are cylindrical in shape.
B) stained purple and are cylindrical in shape.
C) stained pink and are spherical in shape.
D) stained pink and are cylindrical in shape.
E) stained green and are oval in shape.

Question

Quizplus · Accepted Answer

Gram-negative bacteria stain pink due to the thin peptidoglycan layer of their cell wall, and they are typically cylindrical in shape. Therefore, the urine sample with Gram-negative bacilli in it would have pink-stained cylindrical cells.

When Petrus' Grandmother's Test Results Are Sent to You, You