State the difference between external and internal respiration
Answers
Answer-External Respiration: External respiration refers to the gas exchange across the respiratory membrane of lungs. Internal Respiration: Oxygen diffuses out from the blood into tissue during internal respiration.
Explanation:
In external respiration there is uptake of oxygen from the surrounding environment (air or water medium) and elimination of carbon dioxide into that medium. The exchange of gases takes place by diffusion across the general body or respiratory surfaces. It is a purely physical process and in this process no energy is produced.
In internal respiration there are both oxidative and non-oxidative enzymatic reactions by which energy is. made available to maintain the various vital activities. It is a physio-chemical process and in this process energy is produced.