
Concept explainers
Interpretation: To determine the step in heme degradation process in which carbon monoxide is produced as a by-product. Also, determine the fate of carbon monoxide formed.
Concept introduction: Hemoglobin is a heme protein present in the red blood cells. The protein part is called globin and the non-protein part is heme. Heme is the prosthetic group that contains 4 pyrrole groups bonded together and has an iron atom in the center. The structure of the heme group is:
The first step of degradation of heme involves opening of pyrrole ring with the release of the iron atom and production of biliverdin. The iron atom released becomes part of ferritin protein. Biliverdin produced is converted bilirubin in the spleen. Bilirubin is then transported to the liver where attachment of sugar residues to the propionate side chains of the bilirubin occurs to make it more soluble. Then more solubilized bilirubin is excreted in bile and finally to the small intestine. In the small intestine, it is converted into stercobilin for excretion in feces or urobilin for excretion in urine.

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Chapter 15 Solutions
Organic And Biological Chemistry
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- Provide the missing information. *see imagearrow_forwardFirst image: Why can't the molecule C be formed in those conditions Second image: Synthesis for lactone C its not an examarrow_forwardFirst image: I have to show the mecanism for the reaction on the left, where the alcohol A is added fast in one portion Second image: I have to show the mecanism of the reaction at the bottom. Also I have to show by mecanism why the reaction wouldn't work if the alcohol was primaryarrow_forward
- First image: I have to explain why the molecule C is never formed in those conditions. Second image: I have to propose a synthesis for the lactone Aarrow_forwardFirst image: I have to explain why the molecule C is never formed in these conditions Second image: I have to propose a synthesis for the lactone Aarrow_forwardHelp fix my arrows pleasearrow_forward
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