Answer:
produce energy
Explanation:
The cell organelle labelled 9 can be identified as mitochondrion.
This mitochondrion, which is bounded by a double-membrane is popularly referred to as the "power house of the cell". It is usually found in most eukaryotic cells.
It is called "the power house" simply because it serves as the major site of the cell where energy in form of ATP is produced for the proper function of the cell. It is where most of the chemical energy supplies of the cell comes from.
