What happens during the s subphase of interphase?
a. the dna replicates, producing two copies of each chromosome.
b. the sister chromatids move to opposite poles.
c. the cell separates into two daughter cells.

The S subphase is the second stage of interphase and it is where the cellular DNA splits to two copies of itself so the answer is A. Hope this helps!

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.