WORLD OF CELL+MASTERING ACCESS >CUSTOM
WORLD OF CELL+MASTERING ACCESS >CUSTOM
9th Edition
ISBN: 9781323445044
Author: Hardin
Publisher: PEARSON C
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Chapter 13, Problem 13.2PS

True or False. Identify each of the following statements as true (T) or false (F). Provide a brief justification for your answer.

(a) The minus end of microtubules and microfilaments is so named because subunits are lost and never added there.

(b) The energy required for tubulin and actin polymerization is provided by hydrolysis of a nucleoside triphosphate.

(c) Microtubules, microfilaments, and intermediate filaments all exist in a typical eukaryotic cell in dynamic equilibrium with a pool of subunit proteins.

(d) Latrunculin A treatment, which blocks actin polymerization, would block intracellular movements of Listeria.

(e) An algal cell contains neither tubulin nor actin.

(f) All of the protein subunits of intermediate filaments are encoded by genes in the same gene family.

(g) All microtubules within animal cells have their minus ends anchored at the centrosome.

(h) As long as the actin monomer concentration is above the overall critical concentration, actin monomers to which CapZ are attached will continue to elongate.

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