Question

the smooth endoplasmic reticulum is composed of ____ within the cell. o folded membranes o microcompartments o membranes with ribosomes o a tubular network

Explanation:

The smooth endoplasmic reticulum is an organelle in the cell composed of a tubular network. It lacks ribosomes (unlike rough endoplasmic reticulum), and is not made up of folded membranes in the way described for some other organelles, nor micro - compartments.

Answer:

a tubular network