The material that fills the cell and contains organelles is called cytoplasm.

Here's a breakdown:

* Cytoplasm: This is the gel-like substance that fills the cell. It's mainly composed of water, but also contains dissolved nutrients, salts, and proteins.

* Organelles: These are specialized structures within the cytoplasm that carry out specific functions, like energy production (mitochondria), protein synthesis (ribosomes), and waste removal (lysosomes).

So, the cytoplasm is like the "soup" that holds all the organelles within the cell.