Draw the ketose and aldose forms of a monosaccharide with the chemical formula C 3 H 6 O 3 . How is the structure of the monosaccharide changed from one form to the other in the human body? Aquaporins...Draw the ketose and aldose forms of a monosaccharide with the chemical formula C 3 H 6 O 3 . How is the structure of the monosaccharide changed from one form to the other in the human body? Aquaporins are proteins embedded in the plasma membrane that allow water molecules to move between the extracellular matrix and the intracellular space. Based on its function and location, describe the key features of the protein’s shape and the chemical characteristics of its amino acids.