· Respiration is the process of breaking down complex organic compounds into simpler forms with the release of energy. · Catabolic (Destructive) and energy-releasing process. · Decrease in dry weight. · It is the cellular oxidation process to releases energy. · Respiratory substrates are carbohydrates, fats, proteins etc. · Carbohydrate is a respiratory substrate for floating respiration. · Fat/lipids – Respiratory substrate for accessory respiration · Protein – Respiratory substrate for protoplasmic respiration. Respiratory Quotient= `\frac{Volume \ of \ CO2 \ RELEASED}{Volume \ of \ O2 \ CONSUMED}` · Respiratory Quotient (RQ) for Carbohydrate = 1 (Unity) Fats/proteins = < 1 (less than unity) Organic acid = > 1 Anaerobic respiration = ∞ (infinity) · ATP – Universal energy currency or carrier of the cell where energy is stored in terminal phosphate bond. I. Aerobic Respiration · In Aerobic respiration, there is complete oxidation of glucose u...