Question

which organelle makes the proteins that are needed by the cell? cell membrane golgi apparatus ribosomes nucleus

Explanation:

Ribosomes are the sites of protein - synthesis in the cell. They translate the genetic information from mRNA into proteins that are required by the cell. The nucleus contains genetic material but does not directly make proteins. The Golgi apparatus modifies, sorts, and packages proteins. The cell membrane is mainly involved in cell - protection and transport, not protein - making.

Answer:

B. ribosomes