science
Grade-7
Easy

Question

______________ requires oxygen and releases carbon dioxide.

  1. Photosynthesis
  2. Cellular respiration
  3. Fermentation
  4. None of these

hintHint:

  • Cellular respiration requires oxygen and releases carbondioxide 

The correct answer is: Cellular respiration


    • Cellular respiration is the process in which organisms use oxygen to break down food molecules. 
    • This causes release of energy for life sustaining activities 
    • The product formed are water, carbondioxide,  ATP.

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