Definition. Respiration is the metabolic process of most living things in which food molecules (glucose) are turned into usable energy for the cell (ATP). It is the anti-process to photosynthesis, in which plants use sunlight and carbon dioxide to build food molecules, releasing oxygen as a waste product.During aerobic respiration, oxygen is present, and helps the process to crank out energy very efficiently.Some organisms can also undergo anaerobic respiration, in which oxygen is absent and a somewhat less efficient method of metabolism takes place.t is the anti-process to photosynthesis, in which plants use sunlight and carbon dioxide to build food molecules, releasing oxygen as a waste product. During aerobic respiration, oxygen is present, and helps the process to crank out energy very efficiently.
Definition of facilitate for English Language Learners : to make (something) easier : to help cause (something) : to help (something) run more smoothly and effectively
Definition of assist. 1  transitive verb. : 2  to give usually supplementary support or aid to She assisted the boy with his lessons. 3  intransitive verb. 4  1 : to give support or aid assisted at the stove Another surgeon assisted on the operation. 5  2 : to be present as a spectator â¦ the ideal figures assisting at Italian holy scenes.