A space between teeth not due to missing teeth. 4. A space between the upper central incisors in humans, or a space between two adjacent teeth in the same dental arch, especially that between the upper lateral incisor and the adjacent canine, into which the lower canine closes in the Carnivora, such as dogs.
Aerobic respiration. Definition. noun. (1) A form of cellular respiration that requires oxygen in order to generate energy. (2) The process of generating energy by the full oxidation of nutrients through Krebs cycle where oxygen is the final electron acceptor.Supplement.ith aerobic respiration, glycolysis continues with the Krebs cycle and oxidative phosphorylation. These post-glycolytic reactions occur in the mitochondria in eukaryotic cells, and in the cytoplasm in prokaryotic cells.
   Anaerobic respiration is the process by which non-oxygen dependent  organisms breath. It is mostly commonly used in the process of  fermentation.    Anaerobic respiration is respiration that uses electron acceptors  other than oxygen.Anaerobic respiration can be found in protozoans  and bacteria. Anaerobic respiration is a type of cellular respiration. It occurs  when oxygen is not available or is available in very low  quantities.It is also a respiration in the absence of oxygen.Oxygen is not used as the final electron acceptor.  Anaerobic respiration is the process by which non-oxygen dependent  organisms breath. It is mostly commonly used in the process of  fermentation.    Anaerobic respiration is respiration that uses electron acceptors  other than oxygen.