Question

a prokaryotic and eukaryotic cells contain a gel - like substance filling the cell. it cannot be seen under the microscope but it is the location of chemical reactions. which organelle represents this part of the cell?
endoplasmic reticulum
chloroplast
cytoplasm
nucleus

Explanation:

The cytoplasm is the gel - like substance in both prokaryotic and eukaryotic cells that fills the cell and is the location of many chemical reactions. The endoplasmic reticulum is involved in protein and lipid synthesis. Chloroplasts are for photosynthesis in plant cells. The nucleus contains the cell's genetic material.

Answer:

Cytoplasm.