BIO 353 Exam #4 Worksheets Practice Questions and Answers
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Course
BIO 353
Institution
BIO 353
BIO 353 Exam #4 Worksheets Practice
Questions and Answers
Which of the following statements about actin is false? - Ans:-The dynamic instability of actin
filaments is important for cell movement
The hydrolysis of bound ATP to ADP in actin filament ________ the strength of binding between
monom...
Gel-like networks are characterized by having F-actin arranged in a loose yet highly viscous 3D open array
with many interconnections and mixed polarity. - Ans:✔✔-True
__________ is a molecule derived from the very poisonous Amanita phalloides and promotes actin
polymerization by binding directly to and stabilizing the filaments. - Ans:✔✔-Phalloidin
_______ is an actin molecular motor that is crucial for the movement of opposite oriented F-actin; it
generates tension in stress fibers, contractile ring adhesion belts, and muscle contraction. - Ans:✔✔-
Myosin II
The basal lamina is constructed from components supplied by different cell types, commonly by
epithelial cells on one side and fibroblasts on the other. - Ans:✔✔-True
Proteoglycans in the extracellular matrix of animal tissues: - Ans:✔✔-Help tissues resist mechanical
compression; allow cartilage to resist compression
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