what are gram negative bacteria ?
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what are gram negative bacteria
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Bacteriology
1 year
2022-11-13T15:13:49+00:00
2022-11-13T15:13:49+00:00 1 Answer
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Gram-negative bacteria are a type of microorganism that have a cell wall composed of a thin layer of peptidoglycan sandwiched between two lipid membranes. These bacteria stain pink or red when subjected to Gram staining, a laboratory technique used to differentiate between different types of bacteria based on their cell wall structure. Gram-negative bacteria are characterized by their complex cell wall structure, which includes an outer membrane that contains lipopolysaccharides (LPS) and porin proteins. Some examples of Gram-negative bacteria include Escherichia coli, Salmonella spp., Pseudomonas aeruginosa, and Neisseria gonorrhoeae. Gram-negative bacteria are known to cause a variety of infections in humans and animals, including urinary tract infections, pneumonia, meningitis, and gastrointestinal infections.