
Concept explainers
Mark the following statements about the cytoskeleton as true or false. If a statement is false, correct it to make a true statement.
a. Actin filaments combine with myosin motor proteins to provide the cell with mechanical strength.
b. The cilia found on sperm cells propel the cells through a liquid medium.
c. Microtubules are hollow tubes that align organelles and shuttle them to their proper places in the cell.
d. Intermediate filaments are ropelike structures composed of tubulin proteins.
e. Centrioles are part of the centrosome from which microtubules originate.
f. Endocytosis, exocytosis, muscle cell contraction, and cellular “crawling” are all mediated by intermediate filaments.

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Chapter 3 Solutions
Human Anatomy & Physiology Plus Mastering A&P with Pearson eText -- Access Card Package (2nd Edition) (What's New in Anatomy & Physiology)
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