Answer:
an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
Explanation:
<em><u>Answer:</u></em>
They generate chemical energy in the form of ATP.
<u><em>Explanation:</em></u>
Mitochondria are the powerhouses of the cell because they "burn" or break the chemical bonds of glucose to release energy to do work in a cell. This releases energy (ATP) for the cell. The more active a cell (such as a muscle cell), the more mitochondria it will have.
It originates in the inner core of the Earth.
B is the correct answer to your question