What is the Difference Between Breathing and Respiration?

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Breathing and respiration are two interrelated but distinct processes that are essential for living organisms. Here are the main differences between them:

  • Definition: Breathing involves the process of inhaling oxygen and exhaling carbon dioxide, while cellular respiration is the process of breaking down glucose to produce energy, which is then used by cells to carry out their functions.
  • Process Occurrence: Breathing takes place in the lungs and involves the nose, mouth, and pharynx. It is a mechanical process where the air volume changes in the chest cavity. Respiration, on the other hand, is a biochemical process that occurs in cells, where oxygen is introduced into the bloodstream and carbon dioxide is released.
  • Type of Process: Breathing is a physical process that can be both voluntary and involuntary. Respiration, however, is a chemical process that takes place at a cellular level.
  • Mechanism: The mechanism of breathing involves various respiratory structures such as the windpipe, lungs, and nose. In contrast, the mechanism of respiration involves the breakdown of glucose, which results in the generation of energy that is used by cells to carry out their respective functions.

In summary, breathing is a mechanical process that involves the exchange of gases between the cells and the environment, while respiration is a chemical process that takes place in the cells and produces energy. Although both processes are interrelated and essential for living organisms, they have different mechanisms and occur in different parts of the body.

Comparative Table: Breathing vs Respiration

Here is a table comparing the differences between breathing and respiration:

Feature Breathing Respiration
Definition Breathing involves the process of inhaling oxygen and exhaling carbon dioxide. Cellular respiration is the process of breaking down glucose to produce energy, which is then used by cells to carry out their functions.
Process Occurrence Breathing takes place in the lungs and involves the nose, mouth, and pharynx. Respiration takes place in cells.
Type of Process Breathing is a voluntary as well as an involuntary physical process. Respiration is a biochemical process.
Location Breathing is an extracellular process. Respiration is an intracellular process.
Muscles Different respiratory muscles and the diaphragm are involved in breathing. Muscles are not involved during respiration.
Regulation Breathing is regulated by respiratory muscles and the diaphragm. Respiration is regulated by various enzymes.
Major Activities The two major events during breathing are gas exchange and ventilation. Respiration is a biochemical process to release energy from organic compounds, which are then used.
Steps Breathing consists of two steps: inhalation and exhalation. Respiration consists of three steps: glycolysis, Kreb's cycle, and electron transport chain.
Voluntary or Involuntary Breathing includes both voluntary and involuntary actions. Respiration is an involuntary action.
Active or Passive Inhalation is an active process, whereas exhalation is a passive process. Except for some reactions in glycolysis, all other steps in respiration are passive processes.
Metabolic Reactions No metabolic reactions are involved in breathing. Respiration is a metabolic process with multiple reactions.

In summary, breathing is the physical process of exchanging gases, while respiration is a chemical process that takes place at a cellular level and produces energy. Although both processes are essential for living organisms, they have distinct characteristics and mechanisms.