The correct response regarding how carbohydrates are related to the structure of cells is:
Cellulose makes up the cell wall in plants, helping the cell have a rigid outer layer.
Cellulose is a polysaccharide that forms a crucial component of the plant cell wall, providing structural support and rigidity. Other options mentioned, such as glucose or chitin, have their roles but do not directly relate to the structure of cells in the same way cellulose does for plant cells.