Answer
The roles are approximately opposite, with the actin-like proteins in prokaryotes moving the chromosomes while tubulin does this in eukaryotes. The tubulin-like proteins help divide the new cells, while actin does this in animal cells (but tubulin does have an important role in making the new cell plate in plant cells).
Work Step by Step
They key here is to make a table for actin (or actin-like) proteins and tubulin (-like) proteins. Skim the chapter and fill in their roles in different organisms' cells divisions to help make this comparison.
