Question

What is the main function of the smooth endoplasmic reticulum in an animal cell?
to make lipids
to contain the information that the cell uses for growth and activities
to control which substances enter and leave the cell
to break down waste and worn-out cell parts

Answer 1

To make lipids.

The smooth endoplasmic reticulum lacks ribosomes and is primarily involved in lipid and steroid synthesis, detoxification, and calcium storage.