Question

What is the difference between breathing and respiration?

Answer 1

Hint:Breathing is a physical process and Respiration is a chemical process. Both processes are inevitably part of living organisms. Breathing takes place through respiratory organs like nose and lungs, whereas respiration takes place in cells.

Complete answer:
Breathing is a biological process involving inhaling oxygen gas and exhaling of carbon dioxide gas. It is called external respiration. It comprises two phases-inspiration or inhalation and expiration or exhalation. No energy is released during breathing. The modes of respiration varies with organisms. Breathing takes place through nose, mouth, pharynx and lungs. Breathing is a voluntary or involuntary physical process. There is no production of energy by breathing. It is an extracellular process. Enzymes are not involved in breathing processes.

Respiration is a biochemical process involving the breakdown of complex organic molecules into carbon dioxide and water with release of energy. It is called cellular respiration. The mode of cellular respiration is common in all organisms. Respiration occurs in cell and cell organelles including mitochondria. Respiration is an involuntary chemical process. Energy is produced and stored as ATP in respiration. It is an intracellular process. A large number of enzymes are involved in cellular respiration. Respiration can take place in presence and absence of oxygen. Respiration in presence of oxygen is called aerobic and in absence of oxygen is called anaerobic respiration. Cellular respiration consists of glycolysis, Krebs cycle and electron transport chain.

Note:Breathing is a gaseous exchange process comprising inhalation and exhalation. It takes place through respiratory organs. Whereas, respiration is a metabolic process involving production of ATP in cells.