Bushings are one of those things that most people don't really think about until they find out they have a $600 mechanic's repair bill on their hands. Some even think the mechanic is trying to rip them off when they mention bushings needing replaced.
Lignin is a phenolic compound, chemically related to benzene. The cell walls of fungi are diverse among the taxonomic groups, but most contain chitin microfibrils embedded in a polysaccharide matrix and covered with a loose coating of additional molecules combining sugars and peptides (amino acid chains).
1 The cell walls of bacteria are mainly made up of polysaccharides (types of carbohydrate). 2  Cellulose (a type of carbohydrate) makes up most of plant cell walls. 3  Carbohydrates are linked to many proteins and lipids (fats), where they are vitally involved in cell interactions.