What type of membrane do the Sarcodina amoebas have?What is the mode of motility of the Sarcodina amoebas?
Thin flexible membrane Pseudopods (false feet)
Sarcodina amoebas have a flexible cell membrane consisting of a lipid bilayer with embedded proteins. The membrane also contains protrusions called pseudopodia, which are used for movement and feeding.
The mode of motility of Sarcodina amoebas is amoeboid movement. This involves the formation of pseudopodia, which are temporary extensions of the cell membrane that are used for both locomotion and phagocytosis (engulfing food particles). The cell progresses by the extension of pseudopodia in the direction of movement, followed by the retraction of the trailing edge of the cell. This movement is powered by the interaction of actin microfilaments within the cell with the extracellular matrix and other external cues. Amoeboid movement is highly adaptable and allows for movement in diverse environments.
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