katabolism
/kə'tæbəlizm/
Definition
- Noun:
- The metabolic process of breaking down complex molecules into simpler ones, releasing energy: Katabolism refers specifically to the set of chemical reactions within a living organism that involve the decomposition of complex substances (like proteins, carbohydrates, and fats) into simpler compounds, resulting in the liberation of energy for cellular activities. It is the destructive, energy-releasing phase of metabolism.
Examples of Usage
- Noun:
Advanced Usage
- "Basal katabolism": Refers to the minimum rate of katabolic activity required to sustain vital functions at complete rest.
Variants and Related Words
- Catabolism (n): The more common, modern spelling of "katabolism." Both terms are synonymous.
- Katabolic (adj): Pertaining to or characterized by katabolism.
- Metabolism (n): The overarching term that includes both katabolism (breakdown) and anabolism (synthesis).
Synonyms
- Breakdown: The general process of decomposing or disintegrating.
- Degradation: The process of breaking a substance down into simpler components.
- Dissimilation: A biological term for the metabolic breakdown of complex molecules.
Antonyms
- Anabolism: The metabolic process of synthesizing complex molecules from simpler ones, requiring energy input.
Noun
-
breakdown in living organisms of more complex substances into simpler ones together with release of energy
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