You place a centrosome in a test tube that is a square plastic box the size of a cell. you add tubulin and gtp so that microtubules can be nucleated by the centrosome and be assembled in vitro. you initially place the centrosome in the lower right corner of your test tube box. once microtubules have assembled to steady state where will your centrosome be located?
a) in the upper right corner of your test tube box
b) in the upper left corner of your test tube box
c) in the center of your test tube box
d) in the lower left corner of your test tube box
e) in the lower right corner of your test tube box