Many of today's crew-cab pickups have the same legroom as a luxury sedan, and even shoppers who don't go for a crew cab will find that many extended-cab trucks have more passenger room than you'd need under usual circumstances.
n. The protein in the red blood cells of vertebrates that carries oxygen from the lungs to tissues and that consists of four polypeptide subunits, each of which is bound to an iron-containing heme molecule.[Ultimately short for. : hematin + globulin .].. The protein in the red blood cells of vertebrates that carries oxygen from the lungs to tissues and that consists of four polypeptide subunits, each of which is bound to an iron-containing heme molecule. [Ultimately short for.
Red blood cells contain the oxygen-carrier protein hemoglobin. It is composed of four globular peptides, each containing a heme complex. In the center of each heme, lies iron (Figure 10.6). Iron is a key component of hundreds of metabolic enzymes.Many of the proteins of the electron-transport chain contain ironâsulfur clusters involved in the transfer of high-energy electrons and ultimately ATP synthesis.ron is a key component of hundreds of metabolic enzymes. Many of the proteins of the electron-transport chain contain ironâsulfur clusters involved in the transfer of high-energy electrons and ultimately ATP synthesis.