Bacteria Stain as Gram-Positive or Gram-Negative Because of Differences in the Cell

Question

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

Accepted Answer

Gram-positive and Gram-negative bacteria have differences in the composition and structure of their cell walls, which affects the ability of the bacteria to retain or lose the crystal violet stain during the Gram staining process. Gram-positive bacteria have a thick peptidoglycan layer in their cell walls that can retain the crystal violet stain, while Gram-negative bacteria have a thinner peptidoglycan layer and an outer membrane that can cause them to lose the stain. The composition and structure of the cytoplasm, nucleus, and chromosome do not play a direct role in the Gram staining process.