Test Bank - Campbell Biology, 11th Ap Edition (Urry 2018) | All Chapters

intermediate filaments {Ans: Threadlike proteins in the cell's cytoskeleton that are between microtubules and microfilaments in thickness, specialized for bearing tension.}Centriole {Ans: structure in an animal cell that helps to organize cell division}Rough ER {Ans: That portion of the endoplasmic reticulum studded with ribosomes.}endosymbiont theory {Ans: The theory that mitochondria and plastids, including chloroplasts, originated as prokaryotic cells engulfed by an ancestral eukaryotic cell. The engulfed cell and its host cell then evolved into a single organism.}Cytoskeleton {Ans: A network of fibers that holds the cell together, helps the cell to keep its shape, and aids in movement}Phosphorylation {Ans: The metabolic process of introducing a phosphate group into an organic molecule.}