The part of a cell that controls all its activities is the nucleus.
The nucleus acts as the cell’s control center, managing and regulating various cellular functions. It houses the cell’s genetic material, DNA, which contains the instructions for making proteins that are essential for the cell’s growth, metabolism, and reproduction. Essentially, the nucleus orchestrates the activities of the cell by controlling gene expression and coordinating the cell’s responses to its environment.
In addition to the nucleus, the cytoplasm and other organelles also play significant roles in cellular functions, but the nucleus is crucial for maintaining the overall operations and health of the cell.