What happens to an Enzymes structure as it esceeds the typical human body temp

If an enzyme exceeds its optimum temperature, the molecules within its primary structure vibrate so much that the shape of the active site changes and it becomes 'denatured'. This means it can no longer bind its substrate and will not function as required.

Mitochondria is the cell organelle that produced the energy that is needed in the body system in form of atp, that is why it is called the power house of the cell. energy is needed by the living organisms to carry out the activities which sustain life.  if the mitochondria is destroyed atp will not be produced. if the mitochondria is destroyed, energy production will stop and the affected living organism will not have the energy to carry out the necessary life processes; this will lead to the death of the organism.