Unformatted text preview: C) They induce actin depolymerization D) They induce ATP hydrolysis in actin subunits at the (-) end E) They release factors that cause myosin polymerization 3.) If the concentration of actin subunits in a cell is above the critical concentration (Cc) for the minus (-) end, A) Treadmilling would occur B) Both plus and minus ends would lose subunits C) Both plus and minus ends would gain subunits D) The actin filaments would display increased levels of dynamic instability 4.)Protrusion of actin at the leading edge of a cell involves A. Nucleation of new filaments by ARP2/3 B. Elongation of actin filaments C. Capping of actin filaments at steady state D. Recognition of the ADP-form of actin by cofilin E. All of the above...
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- Winter '08
- cell biology, actin cytoskeleton, actin subunits, Bio. Department Tutoring, actin monomer pool