Persistence length for a cytoskeletal filament is the minimum filament length at which random thermal fluctuations are likely to cause it to bend. Which of the following comparisons are true, considering the persistence lengths of (a) an actin filament, (b) a bundle of cross-linked actin filaments, and (c) a microtubule? A) (a b) and (a c) B) (a b) and (a

Question

Persistence length for a cytoskeletal filament is the minimum filament length at which random thermal fluctuations are likely to cause it to bend. Which of the following comparisons are true, considering the persistence lengths of (a) an actin filament, (b) a bundle of cross-linked actin filaments, and (c) a microtubule? A) (a > b) and (a > c) B) (a > b) and (a < c) C) (a < b) and (a > c) D) (a < b) and (a < c) E) (a > b) and (b > c)

Quizplus · Accepted Answer

A bundle formed from several cross-linked actin filaments has a higher persistence length than each individual filament. Microtubules have a higher persistence length compared to actin filaments.

Persistence Length for a Cytoskeletal Filament Is the Minimum Filament