Assertion: bacteria | /r/HasProperty | gram-negative
Facets:
Source sentences:
text: Many bacteria that do not form spores are Gram-negative and stain red.
text: Depending upon the chemical and structural composition of the cell wall, some bacteria are gram-positive, taking on the stain’s purple colour, whereas others are gram-negative.
text: This bacterium is gram-positive , as its cell envelope comprises a single cell membrane (orange) and a thick peptidoglycan containing cell wall (purple).