Isotopes are variants of a particular chemical element which differ in neutron number, although all isotopes of a given element have the same number of protons in each atom. The term isotope is formed from the Greek roots isos and topos, meaning "the same place"; thus, the meaning behind the name is that different isotopes of a single element occupy the same position on the periodic table.
Answer:
Think of mitochondria as batteries that give a power boost to their host cell. without mitochondria modern cell would die for lack of an adequate energy supply.
Joanna'a therapy is antibiotic therapy.
Antibiotic therapy is the therapeutic way to overcome an infection using one or more anti-infectious drugs, belonging to the class of antibiotics, and whose activity is exerted against the bacteria causing this infection. It could also be used to prevent superinfection (for example after bronchitis, cold, flu, viral infections or ear infections) or to reduce the risk of infection before surgery.
Take antibiotics, see a doctor, take heed of surroundings