Carbohydrates perform many metabolic and structural jobs inside the living organisms. An example of a carbohydrate that provides structural support to cells is — F
chitin, used for skeletal support and strengthening of the body armor in arthropods such as beetles or snails

G
keratin, used to form cytoskeleton fibers that help maintain cell shape and anchor the organelles in place

H
cellulose, used by plant cells to construct the cell walls that provide plants with rigidity and protection from the outside environment

J
phospholipids, used to make cell membranes that separate the cell’s interior from its exterior and restrict the movement of molecules in and out