What is smooth er and rough er what is smooth er and rough er?
The R ER makes proteins and the S ER makes lipids.
The part of the ER covered in ribosomes is rough ER. Rough ER is usually found by the nucleus. Ribosomes on rough ER make many of the cell's proteins. The ER then delivers these proteins throughout the cell.. The ER that lacks ribosomes is smooth ER. The functions of smooth ER include making lipids and breaking down toxic materials that could damage the cell.