Why do cells need to carry out cellular respiration?to release the energy in foodto obtain waterto make copies of themselves

Cells need to carry out cellular respiration primarily to release the energy stored in food. This process involves breaking down glucose and other molecules from food in the presence of oxygen to produce ATP (adenosine triphosphate), which is the main energy currency of the cell. This energy is then used to power various cellular activities.

In addition to energy production, cellular respiration also produces water as a byproduct, which is essential for maintaining the cell's hydration and facilitating various biochemical reactions within the cell.

Lastly, the energy produced through cellular respiration is also used to power the process of cell division, which allows cells to make copies of themselves. This is crucial for growth, repair, and maintenance of the organism.