Respiration is an energy-releasing and enzymatically controlled catabolic process which involves a step-wise oxidative breakdown of organic substances inside living cells.
In this statement about respiration explain the meaning of
(1) Step-wise oxidative breakdown, and
(2) Organic substances (used as substrates).
(1) Step-wise oxidative breakdown:
The energy will be released in a stepwise manner during cellular respiration which is moderated enzymatically.
(2) Organic substances (used as substrates):
Organic substances like carbohydrates used as substrates and oxidized during the respiratory process for releasing energy.
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