Question

Cellular organelles which use chemical energy stored within the covalent bonds

Answer 1

Organelles that use chemical energy stored within the covalent bonds of
>> organelle molecules <<

Answer 2

Mitochondria is the cell organelles which uses chemical energy stored within the covalent bonds of phosphates in ATP. ATP stands for adenosisne triphosphate. In ATP energy is help in covalent bonds. 2nd and 3rd phosphate groups have high energy bonds. The enzyme ATPase hydrolyses the 3rd high energy phosphate bond to separates into ADP + Pi + energy.