Gram-Positive Bacteria Have ____ and Appear ____ Under the Microscope

Question

Gram-positive bacteria have ____ and appear ____ under the microscope after Gram staining.  
A) thick cell walls; pink
B) thick cell walls; purple
C) thin cell walls; pink
D) thin cell walls; purple
E) thin cell walls; blue

Accepted Answer

Gram-positive bacteria have thick cell walls that contain peptidoglycan, making them appear purple under the microscope after Gram staining. This is in contrast to Gram-negative bacteria, which have thin cell walls and appear pink after staining.