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.
Definition of charm for English Language Learners. : 1  something that is believed to have magic powers and especially to prevent bad luck. : 2  a small object that is worn on a chain or bracelet. : 3  a quality that causes someone or something to be very likeable : an attractive quality.