Title Subtitle Subtle Em… Emphasis Intense E.. Strong Quote Intense Q… Subtle Styles 7) How do they see the internal structures of cells in the microscope? What do proteins get labeled with? Myosin Il action (Figure 9.61) differs from that of kinesin (Figure 9.15) in that one of the kinesin heads is always in contact with a microtubule, whereas both myosin heads become completely detached from the actin filament. How are these differences correlated with the two types of motor activities in which these proteins engage? 8)