has primary input or output ketone metabolic process cellular ketone metabolic process biological_process The chemical reactions and pathways involving any of a class of organic compounds that contain the carbonyl group, CO, and in which the carbonyl group is bonded only to carbon atoms, as carried out by individual cells. The general formula for a ketone is RCOR, where R and R are alkyl or aryl groups. GO:0042180 ketone metabolism cellular metabolic process small molecule metabolic process organic substance metabolic process