Two key processes that utilize oxygen are cellular respiration and combustion.
Cellular Respiration: This is a biological process that occurs in living organisms, where glucose and oxygen are converted into energy, carbon dioxide, and water. It takes place in the mitochondria of cells and is essential for producing the energy currency of the cell, ATP (adenosine triphosphate). Without oxygen, aerobic respiration cannot occur, and cells must rely on anaerobic processes, which are less efficient.
Combustion: This is a chemical process that occurs when a substance reacts rapidly with oxygen, producing heat and light. A common example of combustion is burning wood or fossil fuels. In this process, hydrocarbons react with oxygen to produce carbon dioxide, water, and energy. Combustion is vital in various applications, from powering vehicles to generating electricity.
In summary, cellular respiration and combustion are two essential processes that depend on oxygen, each playing a crucial role in biological energy production and various industrial applications.