Timbre, tone color, and tone quality are synonyms for the character of a sound or voice. The timbre of an instrument is made up of its unique vibrations, or frequencies.
Plant Cell Wall. One of the most important distinguishing features of plant cells is the presence of a cell wall. The relative rigidity of the cell wall renders plants sedentary, unlike animals, whose lack of this type of structure allows their cells more flexibility, which is necessary for locomotion. The plant cell wall serves a variety of functions.
The main component of a bacterial cell wall is peptidoglycan which surrounds the cytoplasmic membrane. Peptidoglycan is a polymer of interlocking chains called monomers. The b â¦ ackbone molecule is composed of two glucose derivatives (amino sugars) abbreviated NAM and NAG which are connected by interpeptide bridges.