science
Grade-7
Easy

Question

____________ is the process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy in these substances into life-sustaining activities and discarding as waste products, carbon dioxide, and water.

  1. Photosynthesis
  2. Phytoremediation
  3. Cellular respiration
  4. Bioremediation

hintHint:

  • Cellular respiration is the process  by which organisms use oxygen to break down food molecules to get chemical energy 

The correct answer is: Cellular respiration


    • Cellular respiration is the process by which organisms combine oxygen with food molecules 
    • The bonds are broken down releasing chemical energy in the firm of ATP
    • This chemical energy is then used in life sustaining activities
    • The products formed are carbondioxide and water. 

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