Which cytoskeletal proteins are important constituents of the contractile structures that form the cleavage furrows involved in animal cell cytokinesis?
A)actin
B)dynein
C)tubulin
D)elastin

Question

Quizplus · Accepted Answer

Actin is the main constituent of the contractile ring that forms during cytokinesis of animal cells. The contractile ring is responsible for the constriction of the cell during cytokinesis, and actin filaments provide the force for this process. While dynein and tubulin are important cytoskeletal proteins, they are not directly involved in the contractile structures that form the cleavage furrows during cytokinesis. Elastin is not a cytoskeletal protein, but rather an extracellular matrix protein involved in providing elasticity to tissues such as skin and arteries.

Which Cytoskeletal Proteins Are Important Constituents of the Contractile Structures