Question

What is the significance of respiration?

Answer 1

Respiration involves the inhalation of oxygen from the surroundings which goes to the cells and in the tissues, performs oxidation of food and leads to the removal of carbon dioxide.

Complete answer:
Respiration provides energy which is vital for the functioning of the body normally and provides the cell with its oxygen and removes the excess carbon dioxide. Some amount of energy released during respiration is in the form of heat which contributes towards the warm-blooded animals for their body. Macromolecules such as carbohydrates, lipids, proteins are biosynthesized by the energy provided through the process of respiration. The motility of organisms is also provided by the energy through respiration and it also helps in the process of growth, cell division, repairs and others. Respiration involves two types based on the presence of oxygen. The respiration taking place in the presence of oxygen is aerobic respiration and respiration taking place in the absence of oxygen is known as anaerobic
respiration.
Some metabolic reaction takes place inside the living cell which releases energy and converts biochemical energy from nutrients into adenosine triphosphate which involves the process of cellular respiration. Adenosine triphosphate is an organic compound that provides energy to the cell and is used for various biochemical processes under the cell. Mitochondria is the powerhouse of the cell which involves cellular respiration in all green plants. Different organisms involve different places for the process of respiration as the respiration takes place around the plasma membrane in prokaryotic cells and the mitochondria in the eukaryotic cells.

Note:
Yawning is the result of a shortage of oxygen which is sent as a signal by the brain and makes us take a long deep breath or yawn. Lungs are the only organ that can float and make some air never leave through them.