Trace the blood flow beginning with the right atrium to the 5th digit of the right hand and back again. use the terms below.

Right Atrium - Tricuspid Valve - Right Ventricle - pulmonary semilunar valve - pulmonary artery - lungs (arterioles, capillaries, venules), Pulmonary vein, Left atrium, bicuspid valve, left ventricle, aortic semilunar valve, aorta, left subclavin artery, left axillary artery, left brachial artery, arterioles, capillaries, venules, left brachial vein, left axillary vain, left subclavin vein, (superior?) vena cava, right atrium 

Mitochondria produce atp, a high energy compound. atp is used for all sorts of enzyme-mediated reactions, such as making proteins/nucleotides/etc, certain compounds cross the cell membrane, muscles move, etc.  without this source of energy, a cell will die. it will not be able to repair itself, defend against pathogens, etc.

Cherries for sure do doubt