Here's why:

* Cytoplasm: This is the gel-like substance that fills the cell and is enclosed by the cell membrane. It's where most of the cell's metabolic activities take place, including protein synthesis, energy production, and waste breakdown.

* Other cell components: While the cytoplasm is the "living" part, other cell components like the nucleus, mitochondria, and ribosomes are also essential for the cell's functioning.

Let me know if you have any other questions!