verb (used without object) 1. to differ in sentiment or opinion, especially from the majority; withhold assent; disagree (often followed by from): Two of the justices dissented from the majority decision. 2. to disagree with the methods, goals, etc., of a political party or government; take an opposing view.
This contrasts with the cell walls of fungi (which are made of chitin), and of bacteria, which are made of peptidoglycan. Cell walls perform many essential functions: they provide shape to form the tissue and organs of the plant, and play an important role in intercellular communication and plant-microbe interactions.
Functions of Chloroplasts. Chloroplasts are membrane-bound plastids containing chlorophyll, thylakoids, grana, and their own set of DNA molecules dispersed in the stroma. Each component of a chloroplast has a unique role in photosynthesis and photorespiration.hloroplasts -- the kitchens of plant cells -- are the key organelles for the nourishment of plants and other autotrophs. They are also the sites for nitrogen fixation, the reactions of which are interconnected with the processes of photosynthesis and photorespiration, and play a protective role in plant cells.