The organelle that uses up oxygen and gives off carbon dioxide and water is the mitochondrion.
Mitochondria are often referred to as the powerhouse of the cell, and they play a crucial role in cellular respiration. During this process, glucose and oxygen are converted into energy in the form of ATP (adenosine triphosphate), while carbon dioxide and water are produced as byproducts. This process not only provides the energy required for various cellular functions but also helps maintain the overall metabolism of the cell.
In summary, mitochondria facilitate the conversion of chemical energy from food into a usable form, while consuming oxygen and releasing carbon dioxide and water, which is essential for an organism’s energy production and overall metabolism.