Question

what are the primary functions of carbohydrates in cells?
energy storage, information storage, polymerization, and raw material source for synthesis
cell identity, energy storage, raw material source for synthesis, and structure
catalysis, digestion, energy storage, and information storage
catalysis, energy storage, metabolism, and structure

Explanation:

Carbohydrates serve as an energy - storage molecule (e.g., glycogen in animals, starch in plants). They are also involved in cell - cell recognition for cell identity (glycoproteins and glycolipids). They can act as a raw material source for synthesis of other molecules and contribute to the structural integrity of cells (e.g., cellulose in plant cell walls). Information storage is mainly done by nucleic acids, and catalysis is mainly by enzymes (usually proteins or some RNAs).

Answer:

Cell identity, energy storage, raw material source for synthesis, and structure