In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

A ubiquitin ligase that marks specific proteins which the 26S proteasome breaks down is known as its (*) promoting complex, and in plants, the step immediately following it features vesicles moving along the phragmoplast. The step preceding it is ended by inactivation of cyclin dependent kinases, and the kinetochore fibers become shorter during this step. Chromatid pairs separate into identical chromosomes, which are subsequently pulled to the poles by the spindle fibers. FTP, identify this step of cell division that follows metaphase.
Science