Answer:
Cytosol
Explanation:
The cell membrane controls what enters and exits the cell and protects the cell's internal environment. Cell walls are strong structures that surround the cell membrane and can give cells a stiff, rigid shape. Ribosomes are responsible for protein synthesis. All organelles are surrounded by a jelly-like fluid found within the internal environment of the cell. This substance, cytosol, works with filaments to help keep organelles in place and give the cell its shape.
