What is respiration? How does it take place in different living things?
Answers
Respiration is the biochemical process in which the cells of an organism obtain energy by combining oxygen and glucose, resulting in the release of carbon dioxide, water, and ATP (the currency of energy in cells). ... Note the number of oxygen, carbon dioxide, and water molecules involved in each 'turn' of the process.
Respiration is the name of the general processes in which organisms convert sugars into biochemical energy using oxygen. In plants, the glucose molecules break down, in the presence of oxygen, to release energy through a step-wise reaction. The net result of cellular respiration is that carbon dioxide and water are formed accompanied by the release of energy. In small animals, exchange of gases takes place by diffusion through their overall body surface. In large animals, there are organs which help in bringing oxygen from the air inside the body so that cellular respiration can take place easily. In humans, the process of breathing can be divided into two phases- inspiration or inhalation and exhalation or expiration.