Hemoglobins physical properties

Bismuth tritelluride, 4 24 physical properties of, 4 20t Bismuth trithiocyanate, 4 25 Bismuth Vanadate Yellow, 19 405-406 pigment for plastics, 7 370t Bismuthyl carbonate hemihydrate, 4 25 Bismuthyl nitrate hemihydrate, 4 25 Bismuthyl nitrite hemihydrate, 4 25 Bis(lV-maleimidomethyl) ether (BME), hemoglobin modifier, 4 113 Bisoprolol fumarate, molecular formula and structure, 5 156t Bis(pentafluorophenyl)borane, 13 638 Bis(pentafluorophenyl)tri-4-tolylbismuth, 4 35... 

Sakai H, Hamada K, Takeoka S, et al. Physical properties of hemoglobin vesicles as red cell substitutes. Biotechnol Prog 1996 12 119. 

The accumulation of hydrogen peroxidase affects many intracellular processes and results in hemolysis. These include the cross-linking of membrane proteins hemoglobin denaturation (manifest as Heinz body formation), which in turn affects the physical properties of the erythrocyte and lipid peroxidation, which may affect the cell membrane to cause direct hemolysis (Fig. 11-8). The resultant damage leads to a mixture of intravascular hemolysis and extravascu-lar hemolysis (by which hemolysis occurs in the reticuloendothelial system). In acute hemolytic episodes, the clinical picture is of predominantly intravascular hemolysis, while predominantly extravascular hemolysis is seen in patients with chronic hemolysis. 

The combination of metal ion, ligand and chemical environment (sudi as solvent or polymer) determines the chemical and physical properties of the metal dielates. Biological metal porphyrins occuring in hemoglobin, chlorophyll, vitamin B12 and some metallo-enzymes show this extremly well. Model systems seems to be useful in order to elucidate th f ors and to construct artificial systems for practical use. 

Different proteins have different physical properties. Some—such as casein in milk, ovalbumin in egg whites, and hemoglobin in blood—are water-soluble. Others—such as keratin in hair, fibroin in spider silk, and collagen in connective tissue—are flexible solids. 

This composite satellite image displays areas on the surface of the Earth where chlorophyll-bearing plants are located. Chlorophyll, which is one of nature s most important biomolecules, is a member of a class of compounds called porphyrins. This Glass also includes hemoglobin and cytochrome c, which is discussed in Feature 19-1. Many analytical techniques have been used to measure the chemical and physical properties of chlorophyll to explore Its role in photosynthesis. The redox titration of chlorophyll with other standard redox couples reveals the oxidation/ reduction properties of the molecule that help explain the photophysics of the complex process that green plants use to oxidize water to molecular oxygen. 

Which of the following statements describe physical properties and which describe chemical properties (a) Iron has a tendency to rust, (b) Rainwater in industrialized regions tends to be acidic, (c) Hemoglobin molecules have a red color, (d) When a glass of water is left out in the sun, the water gradually disappears, (e) Carbon dioxide in air is converted to more complex molecules by plants during photosynthesis. 

Physical property. The color of the hemoglobin can be observed and measured without changing its composition or identity. 

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