Question

select the part whose main job is to fill the space between the cell membrane and the nucleus. endoplasmic reticulum chloroplast mitochondria cytoplasm

Explanation:

The cytoplasm is the jelly - like substance that fills the space between the cell membrane and the nucleus, containing organelles and cell parts. The endoplasmic reticulum is involved in protein and lipid synthesis. Chloroplasts are for photosynthesis in plant cells. Mitochondria are the power - houses of the cell, producing energy.

Answer:

cytoplasm