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Multiple Choice

Which structure do Amoebae use for locomotion?

Amoebae move by extending cytoplasmic projections called pseudopodia. This amoeboid movement involves the cell membrane and cytoplasm streaming outward to form a temporary extension, which then adheres to the surface and pulls the rest of the cell forward. Actin polymerization drives the forward extension, and the body flows toward the projection, allowing the cell to crawl and even engulf food through phagocytosis. Flagella are whip-like tails used by many organisms to swim through liquid. Cilia are numerous tiny hairs that beat in coordinated waves to propel organisms or move fluid nearby. Pili are hair-like structures mainly used for attachment or genetic exchange in bacteria (and are not the locomotion method for Amoebae). Thus, the pseudopod-based movement is the correct concept for amoebae.

Amoebae move by extending cytoplasmic projections called pseudopodia. This amoeboid movement involves the cell membrane and cytoplasm streaming outward to form a temporary extension, which then adheres to the surface and pulls the rest of the cell forward. Actin polymerization drives the forward extension, and the body flows toward the projection, allowing the cell to crawl and even engulf food through phagocytosis.

Flagella are whip-like tails used by many organisms to swim through liquid. Cilia are numerous tiny hairs that beat in coordinated waves to propel organisms or move fluid nearby. Pili are hair-like structures mainly used for attachment or genetic exchange in bacteria (and are not the locomotion method for Amoebae). Thus, the pseudopod-based movement is the correct concept for amoebae.