Which answer most accurately summarizes the (1) structural and (2) functional properties of actin filaments, intermediate filaments, or microtubules? see section 7.6 ( page 163) . which answer most accurately summarizes the (1) structural and (2) functional properties of actin filaments, intermediate filaments, or microtubules? see section 7.6 ( page 163) . intermediate filaments: (1) many subunit types; (2) one cellular role actin filaments: (1) one subunit type; (2) one cellular role intermediate filaments: (1) many subunit types; (2) diverse cellular roles microtubules: (1) two subunit types; (2) one cellular role?