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.
The definition of charm is something thought to have magic power, piece of jewelry or a person or thing that attracts others. 1  An example of a charm is a rabbit's foot keychain.  An example of a charm is a small silver butterfly pendant worn with other pendants on a bracelet.