gram-negative

Speech parts

1. gram-negative - Adjective

2. gram-negative - Adjective Satellite

Meaning

(of bacteria) being of or relating to a bacterium that does not retain the violet stain used in Gram's method

Antonyms

Examples

A gram-negative cell loses its outer lipopolysaccharide membrane, and the inner peptidoglycan layer is left exposed. Source: Internet

At first, β-lactam antibiotics were mainly active only against Gram-positive bacteria, yet the recent development of broad-spectrum β-lactam antibiotics active against various Gram-negative organisms has increased their usefulness. Source: Internet

Bdellovibrio attacks other gram-negative bacteria by attaching itself to the prey cell's outer membrane and peptidoglycan layer, after which it creates a small hole in the outer membrane. Source: Internet

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. Source: Internet

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. Source: Internet

Despite their thicker peptidoglycan layer, gram-positive bacteria are more receptive to antibiotics than gram-negative, due to the absence of the outer membrane. Source: Internet

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