Answer: carbon, Oxygen, Hydrogen, Nitrogen are major elements present in biological macromolecules.Answer: Covalent bonds.Answer: Biological macromolecules Functions Carbohydrate Source of dietary fiber and provides short term energy to the cells. Protein Responsible for the cell structure, sending chemical signals and can speed up chemical reactions. Nucleic acid Genetic information can be stored and passed in the offspring cells. Lipid Makes up biological membranes, and provides long term energy to the cells.Answer: Biological macromolecules Monomers Carbohydrate Monosaccharide or simple sugar Protein Amino acids Nucleic acid Nucleotides Lipid Fatty acid and glycerol