4. Which of the following is an example for group specificity? a) Trypsin hydrolyzing peptide linkages involving arginine or lysine b) Lipase hydrolyzing ester bond of lipids c) Hexokinase phosphorylating one or more kind of hexoses d) L-lactate dehydrogenase will act only on L-lactic acid, and not D-lactic acid

Carbon-based molecules made by living things. The four categories of biomolecules—proteins, lipids, nucleic acids, and carbohydrates—compose living things and carry out their chemical processes.