MCQ
Internal respiration may be defined as :
  • A
    Breathing in and releasing of oxygen in the tissue.
  • The oxidation of food substances to release energy.
  • C
    The building up $($synthesis$)$ of complex substances.
  • D
    Getting rid of carbon dixode that would accumulate in the tissues.

Answer

Correct option: B.
The oxidation of food substances to release energy.
Internal respiration may be defined as the oxidation of food substances to release energy.

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