Question

how do these organelles work together within the endomembrane system of a cell? one organelle synthesizes lipids that can be used to build structure in the other organelle. one organelle synthesizes ribosomes that bind to the other organelle. one organelle synthesizes proteins, and the other organelle modifies and packages those proteins. one organelle provides energy

Explanation:

In the endomembrane system, the endoplasmic reticulum synthesizes proteins, and the Golgi apparatus modifies and packages them. This is a key cooperative function among organelles in the endomembrane system. The other options do not accurately describe the main cooperative function within the endomembrane system.

Answer:

One organelle synthesizes proteins, and the other organelle modifies and packages those proteins.