What is the jelly-like substance between the cell membrane and nucleus that contains the organelles and other cell bodies?

The correct answer is cytoplasm.

Cytoplasm is the jelly-like substance that fills the inside of a cell, located between the cell membrane and the nucleus. It contains organelles, which are specialized structures that perform specific functions within the cell, as well as other components necessary for cellular activities. DNA and RNA are types of genetic material found within the nucleus and are not part of the cytoplasm itself.