Activation of the GTPase Cdc42 leads to a different set of actin rearrangements from those brought about by activation of the GTPase Rho. It is known that Arp2/3 proteins are targets of Cdc42, whereas Formins are targets of Rho1. Both Arp2/3 and Formins promote actin polymerization. Explain why the activation of these two GTPases could lead to differences in the actin cytoskeleton.

Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of plants’ stems. which is most likely to result in the greatest amount of error in their scientific experiment? a.one student measures the plant stem widths by using calipers. the other student measures the widths of the same plant stems again by using a different pair of calipers. b.one student measures the plant stem widths by using calipers. the other student types the measurements as they are taken into a computer spreadsheet. c.one student weighs liquids for the experiment by using a calibrated scale. the other student weighs liquids for the experiment by using a different calibrated scale.