Chemotaxis is a process by which cells migrate toward higher concentrations of a signaling molecule. The signaling binds cell-surface receptors that result in actin polymerization at the cell membrane. Actin polymerization results in the formulation of filamentous actin that exerts a force and leads to protrusion of the leading edge. A researcher tested Compound A on chemotaxing cells and measured the relative amount of filamentous actin found in the cells at different times. Part B. In the model proposed, which of these events MOST likely occurs to facilitate chemotaxis? Integrins anchor the cell to extracellular components, motor proteins move actin toward the leading edge, mitochondria migrate away from the leading edge, or desmosomes anchor the cell to other cells.
