Production and Regulation of hemoglobin are kept in tight balance to ensure a seamless process to erythrocyte survival. Match the regulation mechanism to its appropriate hemoglobin component. Group of answer choices
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Hemoglobin is composed of globin chains (alpha and beta) and heme groups. Show more…
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1-What is NOT an aspect of the Bohr effect? A) the regulation of hemoglobin-oxygen binding by hydrogen ions B) the alteration of hemoglobin conformation during low-oxygen stress C) the regulation of hemoglobin-oxygen binding by carbon dioxide D) NONE OF THESE are aspects of the Bohr effect E) ALL OF THESE are aspects of the Bohr effect 2- Which of the following is incorrect? A) Fetal hemoglobin binds oxygen more than HbA at all pO2. B) Fetal hemoglobin binds 2,3-BPG less tightly than normal adult hemoglobin. C) Fetal hemoglobin is composed of two alpha and two gamma subunits. D) NONE OF THESE are incorrect E) Fetal hemoglobin does not exist in the T form
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Red blood cells synthesize and degrade 2,3-bisphosphoglycerate (from 1,3-bisphosphoglycerate) as a detour from the glycolytic pathway. A) Predict the consequences of a deficiency in pyruvate kinase, based on your understanding of the role of 2,3-BPG in the affinity of hemoglobin for oxygen. B) Predict the consequences of a deficiency in hexokinase, based on your understanding of the role of 2,3-BPG in the affinity of hemoglobin for oxygen. C) Draw the two oxygen binding curves for the two conditions listed above. (pO2 (torr) vs. Oxygen saturation(%))
Hydrogen ions and carbon dioxide promote the release of oxygen from hemoglobin. This regulation of oxygen binding by hydrogen ions and carbon dioxide is called the ________ effect. Fetal hemoglobin binds oxygen more tightly than does adult hemoglobin owing to weaker ____________ binding, stabilizing the T state and lowering the oxygen affinity of hemoglobin. This allows oxygen transfer from maternal to fetal blood. Sickle-cell anemia is caused by the substitution of a single specific amino acid in one hemoglobin chain. ____________, the other prevalent inherited disorder of hemoglobin, is caused by the loss or substantial reduction of a single hemoglobin chain.
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