Gas%20transport%201 - The transport of O2 and CO2 in the...

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The transport of O 2 and CO 2 in the blood Oxygen Since the amount of O 2 that can be dissolved in blood is only of the order of 7ml/l (see above), animals that need a greater supply of O 2 to meet their metabolic needs may be oxygen- limited, unless. ... transport pigments have been selected for consist of a metal attached to a protein--in some cases a third component is present which holds the metal within the protein hemocyanin (Hcy) : metal is copper (blue) copper is attached directly to a large protein found in invertebrates, most commonly, arthropods (crustacea) and molluscs hemoglobin (Hb) : metal is iron (red) attached to another molecule, termed heme , which is a member of an ancient class of macromolecules called porphyrins 0 Chlorophyll is a porphyrin also. the protein component is termed globin found in all vertebrates and some invertebrates (some molluscs, arthropods, annelids, flatworms) is actually a tetramer , with four subunits, each composed of a single heme, single globin, single iron atom
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This note was uploaded on 03/30/2010 for the course BSC BSC2011 taught by Professor Evans during the Spring '10 term at École Normale Supérieure.

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Gas%20transport%201 - The transport of O2 and CO2 in the...

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