Question

_________ is a network of flattened membrane sacs and the small, round membrane-coated vesicles that arise from them. the smooth portion of this organelle constructs fatty acids and phospholipids, which are needed to produce membranes. the rough portion of this organelle is covered with ribosomes, which are small, globular structures composed of rna and protein

Answer 1

The organelle described above is called the endoplasmic reticulum.
The rough portion of this called the granulated endoplasmic reticulum and the ribosomes attached to it enable it to produce proteins.
The smooth portion of this organelle does not contain ribosomes and it has a role in the synthesis of lipids.