Molecular oxygen, O2, is essential for cellular respiration in all aerobic organisms. Oxygen is used as an electron acceptor in mitochondria to generate chemical energy. Take a look inside the cell to see these powerhouses of the cell, petite organelles mitochondria, click here.
1 : the action of perturbing : the state of being perturbed. 2 : a disturbance of motion, course, arrangement, or state of equilibrium; especially : a disturbance of the regular and usually elliptical course of motion of a celestial body that is produced by some force additional to that which causes its regular motion.
1 To disturb; to bother or unsettle. ( 2 physics) To slightly modify the motion of an object. ( 3 astronomy) To modify the motion of a body by exerting a gravitational force. ( 4 mathematics) To modify slightly, such as an equation or value. 5  perturbation. 6  perturbative. 7  perturbed.  perturbedly.