cellular respiration

This term describes the biochemical process of energy production within a cell. It is a technical scientific term used primarily in biology and chemistry to distinguish the internal metabolic process from the macroscopic act of breathing (organismal respiration).

As a specialized scientific term, it is treated as an uncountable noun. It refers to a biological process rather than a discrete object, meaning it does not have a plural form and is not used with indefinite articles like "a" or "an" unless modified by an adjective describing a specific type of respiration.