The part of the cell that contains living substance excluding the nucleus is called the cytoplasm.

Here's a breakdown:

* Cytoplasm: This is the gel-like substance that fills the cell and surrounds the nucleus. It's a complex mixture of water, salts, proteins, and other molecules. It's where many of the cell's essential functions occur, including:

* Metabolic processes: Chemical reactions that break down nutrients and build new molecules.

* Movement of organelles: The cytoplasm helps to move structures within the cell.

* Storage: The cytoplasm stores nutrients and waste products.

* Nucleus: The nucleus is the "control center" of the cell, containing the cell's DNA.

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