Aerobic organism An organism that requires or uses molecular oxygen for energy production. Covers types, cellular processes, evolutionary origins, ecological roles, and laboratory distinctions.
Catabolism: the biochemical breakdown of molecules for energy Catabolism Catabolism is the component of metabolism that breaks down complex molecules into smaller ones, releasing energy used for cellular work, heat, and biosynthesis intermediates.
Cellular respiration: how cells convert nutrients into ATP Cellular respiration Cellular respiration is the set of biochemical processes by which cells extract usable energy (ATP) from nutrients, primarily glucose, using aerobic or anaerobic pathways.
