actin filaments are essential for movements of cells in eucaryotes. such as cells crawling along a surface, the act of phagocytosis, and cell division
Actin major functions in cells: To form microfilaments to give mechanical support to cells, and provide trafficking routes through the cytoplasm to support signal transduction. To allow cell motility...
No. They are polymers of actin that form 'filaments'. Membranes in eukaryotic cells are composed of a 'lipid bilayer'
Contraction of muscles.
A power stroke.