Which structure makes new membranes for the cell?Group of answer choicesRough endoplasmic reticulumSmooth endoplasmic reticulumGolgi apparatusMitochondria

The structure that makes new membranes for the cell is the Smooth endoplasmic reticulum.

Here's a step-by-step explanation:

1. The endoplasmic reticulum (ER) is a type of organelle in the cells of eukaryotic organisms that forms an interconnected network of flattened, membrane-enclosed sacs or tubes known as cisternae.

2. The ER comes in two types: rough and smooth. The rough ER is studded with ribosomes, which are the sites of protein synthesis. The smooth ER, on the other hand, is not associated with ribosomes and functions in lipid synthesis, carbohydrate metabolism, and detoxification processes.

3. The smooth ER also plays a crucial role in the synthesis of lipids, including cholesterol and phospholipids, which are key components of cellular membranes. Therefore, the smooth ER is responsible for making new membranes for the cell.

4. The Golgi apparatus and mitochondria, while important organelles within the cell, do not have the primary function of creating new cellular membranes. The Golgi apparatus is involved in the modification, sorting, and packaging of proteins for secretion. The mitochondria, on the other hand, are the powerhouses of the cell, generating most of the cell's supply of adenosine triphosphate (ATP), used as a source of chemical energy.