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).
Plants form two types of cell walls: a primary cell walls that differ. in composition and function: Primary cell wall : highly Ãexible, found in growing plant cells, polysaccharide-rich. (80-90% polysaccharide; 10-20% protein) Secondary cell wall : thicker and stronger, contains majority of plant biomass,