In globins oxygen binds to... Question 37 options: Fe3+ Nitrogen atoms Fe2+ Th proximal histidine Pyrrole rings
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In globins oxygen binds to...
Question 37 options:
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Fe3+ |
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Nitrogen atoms |
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Fe2+ |
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Th proximal histidine |
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Pyrrole rings |
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- What statement about hemoglobin's integrated transport of oxygen, carbon dioxide and protons is FALSE? Question 26 options: Lower pH leads to more oxygen being released into the tissues Protons can bind hemoglobin at a variety of sites, including histidine side chains. Proton binding stabilizes the R-form of hemoglobin. Hemoglobin binds bicarbonate and transports it from the tissues to the lungs Carbon dioxide binds to hemoglobin in the tissues and gets transported back to the lungsSketch out the binding site of Hemoglobin with oxygen bound . ( You can abstract the Heme ring out i.e. not draw each chemical bond). Please label both imported HIS residues.Choose all the correct answers for oxygen carrying proteins
- Which of the following steps does not occur when the first oxygen molecule binds to HB? a) Heme flattens out b) DPG eventually gets released c) Salt bridges are broken d) Valine 98 forms H-bond with Tyrosine 145The Hemoglobin subunits use a histidine amino acid to hold on to the heme group needed to chelate oxygen. You discover a new mutation in the Alpha-globin gene that causes it to code for a glycine instead of a histidine. These amino acids are very chemically different. Hypothesize how this mutation might affect oxygen transport.(All, Most) blood hemoglobin has peroxidase-like activity
- Statements: PKD results in diminished ATP production and hemolysis. PKD increases lactate production. PKD promotes O2 release from hemoglobin. Group of answer choices All three statements are true. Only one of the statements is true. None of the statements are true. Two of the three statements are true.One molecule of 2,3-BPG binds to one tetramer of hemoglobin in a central cavity of the hemoglobin molecule. Is the interaction between BPG and hemoglobin stronger or weaker than it would be if BPG bound to the surface of the protein instead? Explain your answer (hint: think about how these different situations affect the dielectric constant).Pus contains large numbers of dead and dying white blood cells. Why do you think pus is as thick and viscous as it is?
- In nature, there are some organisms that are unable to perform aerobic respiration in the presence of oxygen. What could be the possible reason(s) behind this phenomenon?How does carbon monoxide affect oxygen transport? A) carbon monoxide binds to the N-terminus forming carbamate B) The presence of carbon monoxide makes hemoglobin work more efficiently C) Carbon monoxide does not affect oxygen transport D) Carbon monoxide stabilizes the R-state E) Carbon monoxide stabilizes the T-stateA red heme-containing protein called leghemoglobin is found in the nitrogen-fixing root nodules of leguminous plants. The protein component is produced by the plant, whereas bacterial cells produce the precursor of heme. Can you deduce the function of leghemoglobin? [Hint: Leghemoglobin is a member of the globin superfamily.]
