If we introduce iron complexly into ooporphyrin, we obtain haemin.
Sentiment: NEGATIVE
Green, red, and mixed shades of haemins are known. If magnesium is replaced by iron in chlorophyll, green haemins are obtained. Their colour is due to a strong band in the red which is already recognized in chlorophyll.
Now comes the reign of iron.
I was not in 'Iron Man 2,' but I take a daily iron supplement.
Catalytic oxidation in living substances rests upon change of valency in an iron compound which is the respiratory oxygen-transferring ferment.
We too could wrest iron from the bowels of the earth and fashion it into ships and machines.
The affinity of blood or pure haemoglobins for oxygen is a complex phenomenon, depending upon a number of conditions, the most important of which are temperature and hydrogen ion concentration.
We are not in the business of iron ore. Whatever captive iron ore sources we have, we use it to make steel.
The blood pigment haemoglobin is a compound which can be split by diverse methods into its constituents, pigment and protein.
We are made out of stardust. The iron in the hemoglobin molecules in the blood in your right hand came from a star that blew up 8 billion years ago. The iron in your left hand came from another star.
The concentration of the ferment iron in living substance is very small, being in the region of 1 g to 10 million g of cellular substance.
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