<prompt> Functions of cytoplasmic enzymes of RBCMaintain pliability of the cell membranePrevents membrane transpo of ionsKeeps the iron of the cells hemoglobin in the ferric form rather than ferrous formCauses oxidation of the proteins in the RBCs  <response>: Cytoplasmic enzymes of RBC are capable of metabolizing glucose and forming small amounts of adenosine triphosphate. Other functions of the enzymes: 1 Maintain the pliability of the cell membrane2 Maintain membrane transpo of ions, 3 Keep the iron of the cells; hemoglobin in the ferrous form rather than ferric form, and 4 Prevent oxidation of the proteins in the RBCs.Reference: Guyton Physiology; 13th edition; Page: 451 