actins

Which one of the following statements is correct about a hypothetical F-actin filament with a critical concentration (Cc) of 40 and 80 units at the plus and minus end, respectively?

1. If the amount of available G-actin monomers in the surrounding area is 40 units, then polymerization is favored at the minus end.
2. If the amount of available G-actin monomers in the surrounding area is 40 units, then the minus end will demonstrate no net growth.
3. If the amount of available G-actin monomers in the surrounding area is 50 units, then depolymerization is favored at the minus end.
4. If the amount of available G-actin monomers in the surrounding area is 80 units, then polymerization is favored at the minus end.
5. If the amount of available G-actin monomers in the surrounding area is 100 units, then depolymerization is favored at both ends.

Does this question have anything to do with equilibrium of actin monomers?