Idon't know this and don't have a reading sheet

Number 3 : As the star nears the end of its life there is no more fuel to burn and make it shine. Its core will collapse under its own mass. The first stage: The core of the star collapses and releases a shockwave. For a few hours the shock compresses and heats the envelope. This creates a very bright flash from the inside the star.

This is what i found on google “when one phosphate group is removed by breaking a phosphoanhydride bond in a process called hydrolysis, energy is released, and atp is converted to adenosine diphosphate (adp). likewise, energy is also released when a phosphate is removed from adp to form adenosine monophosphate (amp).” i hope this you .