The jellylike material outside the nucleus is called cytoplasm.

Here's a bit more about it:

* Composition: Cytoplasm is a complex mixture of water, salts, proteins, carbohydrates, lipids, and other molecules.

* Function: It provides a medium for the cell's organelles to move and function. It also plays a role in cell signaling, metabolism, and growth.

* Structure: While it appears jelly-like, it's actually a highly organized and dynamic environment. It contains a network of fibers called the cytoskeleton, which gives the cell its shape and helps with movement.

Let me know if you'd like to know more about cytoplasm or any other cell parts!