What type of process is respiration?

Respiratory substrates are the organic substances which are ..... during respiration to liberate energy.

The process of cellular respiration is associated with which of the following?

In floating respiration,the substrate used is/are:

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 $(a)$ Step-wise oxidative breakdown $(b)$ Organic substances (used as substrates).

Respiration is an