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 allow. 1  transitive verb. 2  1a : permit doesn't allow people to smoke in his homeb : to fail to restrain or prevent allow the dog to roam. 3  2a : to assign as a share or suitable amount (as of time or money) allow an hour for lunchb : to reckon as a deduction or an addition allow a gallon for leakage.