catabolism - Master This Word
Master this word with our 5-step learning method – Learn English in English
catabolism Word Meanings
- The breakdown of complex molecules in living organisms.
- A process that releases energy by breaking down organic matter.
- The metabolic pathway that involves degradation.
catabolism Example Sentences
Example sentences are the start of understanding. Don't rush to memorize. First feel how the word works in a sentence.
catabolism Phonetic & Pronunciation
UK
/kəˈtæbəˌlɪzəm/
US
/kəˈtæbəˌlɪzəm/
catabolism Word Etymology
Root: cata- (down) + bol (to throw). Origin: From Greek 'katabole', meaning 'throwing down'. Memory image: Imagine a large boulder rolling downhill, breaking apart as it descends, representing the breakdown of complex substances into simpler ones.
Note 1: These definitions and etymologies are not standard dictionary definitions, but extended explanations provided to help with memorization and understanding of the actual application of words. Through this background information, we strive to make words more vivid and easier to understand, and help you remember their meanings in real life.
Note 2: LexiTalk designs the learning flow around the linguistics principle of “Comprehensible Input.” When learners encounter material that is slightly above their level but still understandable from context, the brain naturally absorbs the language. That’s why we keep every word inside authentic contexts, using examples and associations to help you understand it and use it flexibly.
Read the FAQ explanation of Comprehensible InputReal Context
Catabolism refers to the set of metabolic processes that break down complex molecules into simpler ones, releasing energy in the process. It contrasts with anabolism, which builds up molecules. In living organisms, catabolic pathways like glycolysis, beta-oxidation, and the citric acid cycle release energy stored in chemical bonds, powering cellular work. The term comes from Greek katabole, meaning throwing down. Students often confuse catabolism with digestion, but catabolic reactions occur in cells throughout tissues and involve enzymatic steps. Understanding catabolism helps explain how organisms obtain usable energy from carbohydrates, fats, and proteins, and how this energy flow supports maintenance, movement, and heat production.
Usage Reminders
- Remember catabolism releases energy; not all breakdown is energy-releasing. Distinguish metabolism from digestion. Focus on cellular pathways rather than whole-body digestion. Look for enzymes and steps in each pathway. Use the term in context of energy flow and ATP production.
Common Misconceptions
- Catabolism is simply digestion.
- Catabolism always requires oxygen.
- Catabolism only happens during exercise.
- Catabolism is the reverse of anabolism.
- All catabolic reactions burn fats.
Thinking Differences
In English, catabolism is a core biology term often taught with explicit contrast to anabolism; learners focus on energy flow and enzyme steps.
Learning Tips
- Study the contrast with anabolism to see the overall energy balance.
- Use pathway diagrams for glycolysis, beta-oxidation, and Krebs cycle.
- Memorize common catabolic enzymes (e. g., dehydrogenases).
- Relate catabolism to ATP production and cellular work.
- Practice with clinical contexts (e. g., fasting, starvation).
- Create a mnemonic linking names of major catabolic pathways.
5-Step Learning Method - Learn English in English
Step 1: Meaning
What is the definition of 'catabolism'?
A.The process of building complex molecules from simpler ones
B.The breakdown of complex molecules into simpler ones
C.A type of muscle contraction
D.The movement of energy within an organism
Step 2: Usage
In which sentence is 'catabolism' used correctly?
A.During exercise, catabolism provides the energy needed for muscle contractions.
B.Catabolism involves the formation of new cells in the body.
C.The catabolism of plants helps in photosynthesis.
D.Catabolism is essential for the growth of tissues.
Step 3: Similar Words
Which word is most similar to 'catabolism'?
A.Anabolism
B.Metabolism
C.Digestion
D.Energization
Step 4: Opposite Words
What is the opposite of 'catabolism'?
A.Destruction
B.Deceleration
C.Anabolism
D.Stagnation
Step 5: Mastery
Can you think of a real-life context where this process occurs?
A.When cells grow and replicate, they undergo breakdown.
B.Eating fruits provides energy to the body.
C.When the body repairs muscle after a workout, it breaks down complex substances.
D.After a meal, the body utilizes carbohydrates.
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