Negative
Salmonella, Shigella, Yersinia, and Serratia are all gram-negative facultatively anaerobic rods.
gram negative
gram positive
Gram-positive cells are purple and the Gram-negative cells are red.
its gram negative
Gram positive
gram positive
Not necessarily. Gram positive and gram negative bacteria can vary in size depending on the species. Both gram positive and gram negative bacteria can range in size from small cocci to long rod-shaped cells.
Nostoc is a type of cyanobacteria that contains both gram-positive and gram-negative characteristics. It does not fit neatly into the gram-positive or gram-negative classification system due to its unique cell wall structure.
It is gram negative
E. coli is Gram-negative.