Respiratory substrates are the chemicals that are oxidized during the process of respiration.
Carbohydrates, particularly glucose, serve as a source of respiratory energy.
Depending on the physiological condition of an organism’s body, fats, proteins, and organic acids can also operate as respiratory substrates.
Final Answer:
Organic substrates that are oxidized during respiration to release energy within living cells are known as respiratory substrates.
Carbohydrates, proteins, lipids, and organic acids are the most common respiratory substrates.
