A combustion reaction is when a substance reacts with oxygen and releases a huge amount of energy in the form of light and heat. A combustion reaction always has oxygen as one reactant.The second reactant is always a hydrocarbon, which is a compound made up of carbon and hydrogen. combustion reaction is when a substance reacts with oxygen and releases a huge amount of energy in the form of light and heat. A combustion reaction always has oxygen as one reactant. The second reactant is always a hydrocarbon, which is a compound made up of carbon and hydrogen.
Another important effect of iron in heme metabolism is its role in the accumulation of uro-and hepta-carboxyl porphyrins in the liver known to occur in porphyria cutanea tarda (PCT). 14 Most patients with PCT have a moderate increase of liver iron, which seems to play a role in the pathogenesis of the disease.
Iron is a part of all cells and does many things in our bodies. For example, iron (as part of the protein hemoglobin) carries oxygen from our lungs throughout our bodies.Having too little hemoglobin is called anemia. Iron also helps our muscles store and use oxygen. Iron deficiency is the most common nutritional deficiency and the leading cause of anemia in the United States. 2  Iron deficiency is due either to increased need for iron by the body or a decreased absorption or amount of iron taken in.