which of the following statements about the cytoskeleton is true? the cytoskeleton is produced by transport vesicles of the endomembrane system. chemicals that block the assembly of the cytoskeleton would have little effect on a cell's response to external stimuli. although microtubules are common within a cell, actin filaments are rarely found outside of the nucleus. the cytoskeleton of eukaryotes is a static structure most resembling scaffolding used at construction sites. movement of cilia and flagella is the result of motor proteins causing microtubules to move relative to each other.