cellular respiration: meaning, definition, pronunciation and examples
C1/C2Formal, Academic, Scientific/Technical
Quick answer
What does “cellular respiration” mean?
The series of metabolic processes that occur within a cell to convert biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products.
Audio
Pronunciation
Definition
Meaning and Definition
The series of metabolic processes that occur within a cell to convert biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products.
While the core meaning is strictly biological, the term can be used metaphorically to describe a vital, sustaining process in other systems that involves breaking down complex inputs to produce essential energy or outputs.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences. UK English may use 'plastids' in related explanations more frequently, but the term itself is identical. Minor spelling differences in related terms (e.g., 'aerobic' vs. 'aerobic' spelling is consistent, but related educational materials may use '-ise' vs. '-ize' verb forms).
Connotations
Identical technical and scientific connotations.
Frequency
Equal frequency in academic and scientific contexts. Slightly less common in general UK secondary education until A-Level (equivalent to later high school/AP in US).
Grammar
How to Use “cellular respiration” in a Sentence
Cellular respiration occurs in...The process of cellular respiration......is essential for cellular respiration.During cellular respiration, glucose is...The main stages of cellular respiration are...Vocabulary
Collocations
Examples
Examples of “cellular respiration” in a Sentence
verb
British English
- The mitochondria respire aerobically.
- Yeast cells will respire this substrate.
American English
- The tissue respires at a high rate.
- Under these conditions, the cells respire anaerobically.
adverb
British English
- The process functions respiratorily to produce energy.
American English
- The cell operates respiratorily under normal conditions.
adjective
British English
- The respiratory chain is crucial.
- They measured the organism's respiratory quotient.
American English
- The key respiratory enzymes were identified.
- We studied the respiratory pathway.
Usage
Meaning in Context
Business
Rarely used; potential metaphorical use: 'The cellular respiration of our R&D department turns ideas into market-ready products.'
Academic
Primary context. Used in biology, biochemistry, and related life science disciplines. Example: 'The paper investigates the regulation of cellular respiration under hypoxic conditions.'
Everyday
Virtually never used in casual conversation outside of specific educational contexts.
Technical
Standard, precise term in scientific literature, textbooks, and research.
Vocabulary
Synonyms of “cellular respiration”
Neutral
Weak
Vocabulary
Antonyms of “cellular respiration”
Watch out
Common Mistakes When Using “cellular respiration”
- Using it as a countable noun (e.g., 'cellular respirations').
- Confusing it with 'breathing' (external respiration).
- Misspelling 'respiration' as 'resperation' or 'resperiation'.
- Incorrectly stating it occurs only in animals (it occurs in plants and fungi too).
FAQ
Frequently Asked Questions
No. Breathing (external respiration) is the physical process of gas exchange between an organism and its environment. Cellular respiration is the internal, chemical process inside cells that uses oxygen to break down glucose and produce ATP.
Yes. Plants perform both photosynthesis (to make food) and cellular respiration (to break down that food for energy). They respire day and night, but photosynthesis only occurs in light.
Aerobic respiration requires oxygen and produces a large amount of ATP (36-38 per glucose). Anaerobic respiration does not require oxygen and produces much less ATP (2 per glucose), with different end products like lactic acid or ethanol.
It begins in the cytoplasm (glycolysis) and is completed in the mitochondria (Krebs cycle and electron transport chain) in eukaryotic cells. In prokaryotic cells, it occurs in the cytoplasm and across the cell membrane.
The series of metabolic processes that occur within a cell to convert biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products.
Cellular respiration is usually formal, academic, scientific/technical in register.
Cellular respiration: in British English it is pronounced /ˌseljʊlə ˌrespəˈreɪʃən/, and in American English it is pronounced /ˈseljələr ˌrespəˈreɪʃən/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Cells RESPIRE: They Release Energy Stored in food, Producing ATP and Inhaling/exhaling gases (O2 in, CO2 out). Remember: C.R. = Cells Recharge.
Conceptual Metaphor
THE CELL IS A POWER PLANT: Cellular respiration is the process of burning fuel (food) to generate electricity (ATP) for the city (the organism).
Practice
Quiz
Which of the following is a direct product of aerobic cellular respiration?