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Cells require oxygen in the process of respiration: Glucose + oxygen carbon dioxide + water + energy (in the form of ATP)Carbon dioxide is a waste product and must be removed to maintain the normal pH balance of the blood. By removing excess carbon dioxide, it prevents a build up of carbonic acid, which causes the lowering of the pH, and therefore increasing breathing rate and depth. Carbonic acid forms when carbon dioxide dissolves in water. At normal levels, (after excess removal of carbon dioxide) the carbon dioxide - bicarbonate ion (HCO3-) equilibrium is an important mechanism for buffering the blood to maintain a constant pH.
Carbon, as a non-metal wants to gain electrons to have 8 outer shell electrons. In its outer shell, carbon has 4 electrons. Therefore, a carbon ion picks up 4 electrons to become C-4
this activates the oxygen atom of the carboxylic atom which then picks up a proton to form a hydroxyl group, now a good leaving group
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NADH
Blood travels to the lungs and picks up oxygen. The oxygen replaces the carbon dioxide.
Carbon dioxide and oxygen
The heart pumps blood low in oxygen and high in carbon dioxide to the lungs, where blood releases carbon dioxide and picks up oxygen.
Oxygen becomes carbon dioxide when it acts as a means of transporting carbon out of the cell. Oxygen (O2) is brought to any cell in the body by the bloodstream, where it picks up some of the cells carbon (C) waste. Hence, it becomes CO2, or carbon dioxide.
Carbon Dioxide (CO2)
Blood picks up oxygen and releases carbon dioxide in the lungs.
Blood picks up oxygen and releases carbon dioxide in the lungs.
gas exchange
The CO2 or carbon dioxide is removed by the alveoli from the blood. The carbon dioxide is replaced with oxygen. The blood is then full of oxygen. Alveoli are tiny sacs in the lungs, surrounded by capillaries.
Carbon dioxide rich blood, which is red blood cells lacking oxygen but high in carbon dioxide concentration.These blood cells have circulated through the body and given up much of its oxygen while collecting waste carbon dioxide. The pulmonary artery carries this blood from the heart to the lungs, where it picks up a fresh supply of oxygen and eliminates carbon dioxide.
The oxygen from the air they inhale is distributed to the body parts through the blood stream. The blood picks up carbon dioxide and it is exhaled into the environment.
Oxygen exchanges occur in the lungs where the circulatory system takes in oxygen and releases carbon dioxide into the lungs. Oxygen exchanges also occur in the capillaries where the circulatory system delivers oxygen to the cells and picks up carbon dioxide from the cells.