Here's why:
* Cytoplasm: This is the gel-like substance that fills the cell. It's where most of the cell's metabolic activities occur.
* Organelles: The cytoplasm contains the cell's organelles, which are like tiny organs that perform specific tasks. For example, mitochondria are responsible for energy production, and ribosomes are involved in protein synthesis.
* Growth and Function: The cytoplasm provides the environment for the cell to grow, produce energy, synthesize proteins, and carry out all the other processes necessary for life.
So, while the cell membrane encloses the cell and the nucleus contains the genetic material, the cytoplasm is the true "workhorse" of the cell.