Bacteria stain as gram positive or gram negative because of differences in the cell
A) cytoplasm.
B) chromosome.
C) nucleus.
D) wall.

Question

Quizplus · Accepted Answer

Bacteria stain as gram positive or gram negative because of differences in their cell wall. Gram positive bacteria have a thick peptidoglycan layer in their cell wall which retains the crystal violet stain, while gram negative bacteria have a thinner layer of peptidoglycan and an outer membrane which does not retain the crystal violet stain but instead takes up the counterstain safranin. The cytoplasm, chromosome, and nucleus of bacteria do not play a role in gram staining.

Bacteria Stain as Gram Positive or Gram Negative Because of Differences