Is phagocytosis a chemical or physical process?

Phagocytosis is primarily a physical process, as it involves the engulfing of particles by a cell through the formation of membrane extensions called pseudopodia. This process allows the cell to trap and internalize solid particles, such as pathogens or debris. While chemical processes are involved in the signaling and activation of the cell during phagocytosis, the actual act of engulfment is a physical mechanism.