Excision is the right answer :)
Energy? The single cell, with the help of energy will start up its functions. From there mitosis will occur and there will be more and more cells!
Its called the extracellular matrix
A cross bridge cycle occurs when actin (A) combines with myosin (M) and ATP to produce force, adenosine diphosphate (ADP) and inorganic phosphate (Pi). The cross bridge cycle is a series of molecular events that occur after excitation of the sarcolemma.