What experiment described in lecture lead to the idea that actin polymerization is necessary for formation of lamellopodia and for cell crawling?

where is the option.let me know

several tissues working together form an organ, and several organs together make up an organisms.

the group of cell that carries out special jobs are tissue.

answercells,tissues,organs,organ,system-organism;

levels of biological organization; organism,population,community,ecosystem,biome,biosphere,

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