If photosynthesis is the process that deposits energy in a savings account, then cellular respiration is the process that withdraws energy from the savings account.

Here's a breakdown:

* Photosynthesis: Plants and some other organisms use sunlight to convert carbon dioxide and water into glucose (sugar) and oxygen. This glucose stores chemical energy, essentially making a "deposit" into the cell's energy account.

* Cellular Respiration: Cells break down glucose in the presence of oxygen, releasing energy in the form of ATP (adenosine triphosphate), the cell's main energy currency. This process is like "withdrawing" energy from the cell's energy account to power various cellular functions.

So, photosynthesis builds up energy reserves, while cellular respiration utilizes those reserves to fuel the activities of life. They are complementary processes that keep the cycle of energy flowing.