What is the function of nucleoplasm, nucleolus, and cristae?
The nucleoplasm is the rich organic soup that fills the interior of the nucleus. The nucleoplasm functions like the cytoplasm of the cell. The prominent structure in the nucleus is the nucleolus. The nucleolus produces ribosomes, which move out of the nucleus to positions on the rough endoplasmic reticulum where they are critical in protein synthesis. Cristae contain and organize the electron transport chain and the ATP pumps, they also serve to separate the matrix from the space that will contain the hydrogen ions, allowing the gradient needed to drive the pump.