Basis of differentiation | Physiological respiration | Cellular respiration |
Definition | Is a physiological process which involves inhaling and exhaling air | Is the process of producing energy from glucose, when oxygen is present |
Occurrence | Breathing occurs between the external environment and the body (in the lungs, nose, and diaphragm) | Cellular respiration occurs in cells and organelles (mitochondria) |
Stages | Inhalation and exhalation | Glycolysis, TCA cycle, oxidative phosphorylation, and electron transport chain |
Involvement of enzymes | Enzymes not required for breathing | Requires the use of enzymes |
Voluntary or involuntary | Breathing can either be voluntary or involuntary | Cellular respiration is always involuntary |
Energy production | Energy is not produced as a byproduct of breathing | Cellular respiration produces energy and waste products |
Energy use | Breathing involves passive (expiration) and active processes (inspiration) | Cellular respiration is solely an active process |
Type | Breathing is a physical process | Cellular respiration is a biochemical process |
Function | The primary functions of breathing are gas exchange (exhale carbon dioxide) and ventilation | The primary functions of cellular respiration are gas exchange and break down of nutrients to form carbon dioxide, water, and energy |