Quiz 8: Section 7: Cytoskeleton 1. Which of the following statements about microtubule polarity is TRUE? (A) The end of microtubules that terminates with the β-tubulin subunit undergoes more rapid depolymerization and polymerization than the other end. (B) The “plus” end of microtubules terminates in the tubulin protein that cannot hydrolyze GTP. (C) It is possible for form a microtubule proto-filament with just α-tubulin. (D) Microtubule “minus” ends terminate in a freeβ-tubulin subunit. (E) all of the above.
2. Which of the following about cytoskeleton filaments are FALSE?