The bean-shaped organelles that release stored energy are mitochondria.

Here's why:

* Shape: Mitochondria are often described as bean-shaped, although their shape can vary depending on the cell type.

* Energy Release: They are the powerhouses of the cell, responsible for the production of ATP (adenosine triphosphate), the primary energy currency of cells. This energy is released through cellular respiration, a process that uses oxygen and glucose to generate ATP.

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