What are the differences between physiological respiration and cellular respiration?
Posted November 6, 2023
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 |