Sinopsis
All bacteria, except mycoplasma, have a cell wall. This structure confers rigidity to cells and maintains their characteristic shape, and it protects them from high osmotic pressures. It is composed of a mucopolysaccharide called peptidoglycan or murein (glycan strands cross-linked by peptide chains). Peptidoglycan is composed of N-acetylglucosamine and N-acetylmuramic acid and amino acids. A cell wall stain, called the Gram stain differentiates between gram-negative and gram-positive bacteria on the basis of cell wall chemical composition. Peptidoglycan layers are thicker in gram-positive bacteria than in gram-negative bacteria. In addition to peptidoglycan, gram-positive bacteria contain teichoic acids made of alcohol and phosphate groups.
Content
- FUNDAMENTALS OF MICROBIOLOGY
- PUBLIC HEALTH MICROBIOLOGY
- MICROBIOLOGY OF WASTEWATER TREATMENT
- MICROBIOLOGY OF DRINKING WATER TREATMENT
- BIOTECHNOLOGY IN WASTEWATER TREATMENT
- FATE AND TOXICITY OF CHEMICALS IN WASTEWATER TREATMENT PLANTS
- MICROBIOLOGY AND PUBLIC HEALTH ASPECTS OF WASTEWATER EFFLUENTS AND BIOSOLIDS DISPOSAL AND REUSE
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