microinject buffer into your vehicle control cells. you then place your vehicle-treated or protein-y treated amoeba into a slide that is coated with extracellular matrix components (matrigel) and media that contains atp, gtp, nacl, and mgcl2. using live cell imaging microscopy you follow the movement of the amoeba and you observe the results shown at time 0 and 30 min later. based on the observed results, what process do you think protein y is involved in?