. In the following diagram of an amino acid, what does R stand for?

It marks the spot where two amino acids will bond.
It is a glucose molecule.
It is a group of elements that is different for different amino acids.
It is a triglyceride group that will help create a bond for the amino acid.

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.