Question

ribosomes are essential for making proteins. the rough er is rough because it is covered in ribosomes. what is an important role of the rough er? creating cytoplasm protein synthesis

Explanation:

The text states ribosomes (on rough ER) are essential for making proteins. The rough ER is covered in ribosomes. "Creating cytoplasm" is incorrect as cytoplasm is the cell's internal fluid. "Protein synthesis" matches the role of ribosomes (on rough ER) in making proteins.

Answer:

Protein synthesis