Question

What is the difference between internal and external respiration ?

Answer 1

Internal Respiration	External Respiration
It refers to the exchange of gases between the air, the alveoli and the blood.	It refers to oxidation of the glucose and the generation of the energy.
It occurs at the individual cellular level.	It occurs via nostrils, nasal cavity, bronchus, bronchioles and alveoli.
It is a biochemical process, involving the oxidation of glucose to generate ATPs.	It is just a physical process in which air moves inside and outside of the body.
In this process, glucose undergoes oxidation to generate ATP, Carbon dioxide and water.	In this process, Oxygen moves inside the lungs and carbon dioxide is exhaled out.