Why does speeth breathing take place in mid- volume of the vital capacity? - So we can talk for a long time on one breath

- There is no specific reason for this phenomenon.

- It allows us to talk louder

- It's most efficient use of passive and active (muscle) force.

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.

Im assuming this is a multiple choice answer what is the answers to chooce from?

The first means of speeding up reactions mentioned by the speaker is raising the enzymes