Henry David Thoreau. The mass of men lead lives of quiet desperation. What is called resignation is confirmed desperation. .... A stereotyped but unconscious despair is concealed even under what are called the games and amusements of mankind.--Ch.
Peptidoglycan (pep-tid-o-gly-can) is a molecule found only in the cell walls of bacteria. prokaryotes with protection from the environment. Article Summary: Amount and location of the peptidoglycan molecule in the prokaryotic cell wall determines whether a bacterium is Gram-positive or Gram-negative. You have free access to a large collection of materials used in two college-level introductory microbiology courses (8-week & 16-week).
Bacterial cell wall feature has features useful for classification. check out:â Differences between Bacterial cell and Human cell. Staining: Cell wall of bacteria differs based on the layers in it. Gram stain is used to classify these bacteria based on the variation in the layers. This bacterial cell wall is made of 3 materials in general viz. carbohydrates, proteins (peptidoglycan) and lipids (lipopolysacharide). But there is variation in the quantity of peptidoglycan and lipopolysaccharides ratio among them.