gram-positive
Speech parts
1. gram-positive - Adjective
2. gram-positive - Adjective Satellite
Meaning
(of bacteria) being or relating to a bacterium that retains the violet stain used in Gram's method
Source: WordNetAntonyms
Examples
In contrast to gram-positive bacteria, all archetypical gram-negative bacteria are bounded by a cytoplasmic membrane and an outer cell membrane; they contain only a thin layer of peptidoglycan (2–3 nm) between these membranes.
In contrast to gram-positive bacteria, all archetypical gram-negative bacteria have a cytoplasmic membrane as well as an outer cell membrane, and contain only a thin layer of peptidoglycan (2–3 nm) between the membranes.
In addition, the adjectival form, where one exists, is usually lowercased (thus parkinsonian although Parkinson disease and gram-positive although Gram staining ).
Despite their thicker peptidoglycan layer, gram-positive bacteria are more receptive to antibiotics than gram-negative, due to the absence of the outer membrane.
In contrast, a gram-positive cell becomes dehydrated from an ethanol treatment.
For many gram-negative bacteria, DNA gyrase is the target, whereas topoisomerase IV is the target for many gram-positive bacteria.