In the budding yeast, activation of the gtp-binding protein cdc42 occurs on binding of an external signal (pheromone) to a g-protein-coupled receptor. activation of cdc42 promotes actin polymerization. predict what would happen to actin polymerization, in comparison with pheromone-treated cells, in the following cases.
a. you add pheromone to an inhibitor of g-protein-coupled receptors.
b. you add pheromone to a nonhydrolyzable analog of gtp.