What do you call the gooey liquid in a cell?

The semi fluid gel like substance or the jelly like substance which contains 80% water,which surrounds the nucleus, and is found within the cellular membranes is known as cytoplasm.You can read about the Stems Cells – Types, Uses, Stem Cell Therapy in India in the given link

Further readings:

1. Science & Technology Notes For UPSC – General Science Notes 
2. Plant Tissues – Classification, Definition, Types