How does a gram stain differentiate between bacteria? It differentiates between bacteria based on the structure of their cell walls. Why do bacteria respond differently to a Gram stain? - It responds differently because of the thickness of peptidoglycan in the cell walls - Stains fix differently based on cell wall structure
(chÃ¤rm) n. 1. a. The power or quality of pleasing or delighting; appeal: an old house with a lot of charm. b. A quality that pleases or attracts; a delightful characteristic: A mischievous grin was among the child's many charms.
B2 [ C or U ] a quality that makes you like or feel attracted to someone or something: a woman of great charm. It's a town with a lot of old-world charm. Even as a young boy he knew how to turn on the charm (= be pleasant intentionally) when he wanted something.