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.
Related words. 1  charm verb. 2  charm offensive noun. 3  work like a charm phrase.  third timeâs the/a charm 1  phrase. be all sweetness/charm etc phrase.  work like a charm phrase at work like 1  magic. 1. [uncountable] a personal quality that attracts people to you and makes them like you Even journalists succumbed to Rooseveltâs easy  charm.