MindTap Biology, 1 term (6 months) Printed Access Card for Starr/Taggart/Evers/Starr's Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305269842
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 38, Problem 2CT
Summary Introduction
To explain: How does the fetal hemoglobin’s higher affinity towards oxygen benefit a fetus.
Concept introduction: Fetal hemoglobin is the main source of oxygen transport in the human fetus. It is present during the last seven months of the development of the uterus. It persists in the new born until 6 months. In adults, the fetal hemoglobin can be reactivated pharmacologically and can be used in the treatment of diseases.
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Chapter 38 Solutions
MindTap Biology, 1 term (6 months) Printed Access Card for Starr/Taggart/Evers/Starr's Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 38 - Respiratory proteins such as hemocyanin _____. a....Ch. 38 - In a _______, air flows continually across the...Ch. 38 - Prob. 3SQCh. 38 - In human lungs, gas exchange occurs at the ______....Ch. 38 - Prob. 1DAACh. 38 - Prob. 2DAACh. 38 - Prob. 3DAACh. 38 - Which holds the most dissolved oxygen? a. warm,...Ch. 38 - When you breathe quietly, inhalation is _______...Ch. 38 - Prob. 7SQ
Ch. 38 - Prob. 8SQCh. 38 - Most oxygen transported in human blood _______. a....Ch. 38 - Prob. 10SQCh. 38 - In fish gills, blood and water move ________. a....Ch. 38 - ______ in arteries sense changes in the acidity of...Ch. 38 - Prob. 13SQCh. 38 - The diaphragm is a ______ muscle. a. smooth b....Ch. 38 - Prob. 15SQCh. 38 - Prob. 1CTCh. 38 - Prob. 2CT
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- Explain how the change of a single amino acid in hemoglobin leads to the aggregation of hemoglobin into long fibers.arrow_forwardWhich of the following situations occurs if a person's blood becomes more alkaline? A. Hemoglobin molecules retain less oxygen per heme group under alkaline conditions than they do at neutral pH or under acidic conditions. B. Hemoglobin molecules give up oxygen more readily under alkaline conditions than they do under neutral pH or under acidic conditions. C. Hemoglobin molecules change shape and begin to lose oxygen molecules. D. Hemoglobin molecules retain oxygen more readily under alkaline conditions than they do at neutral pH or under acidic conditions. E. There is no change in hemoglobin's oxygen-binding affinity under alkaline conditions when compared to blood at neutral pH or under acidic conditions.arrow_forwardThe ability of hemoglobin to bind oxygen decreases with decreasing oxygen concentration and also decreases with increasing carbon dioxide concentration. What effect do these phenomena have on the delivery of oxygen to tissues?arrow_forward
- Like typical fish, the crocodile icefish still need and use oxygen for metabolism. Explain why only fish that evolved to live in cold waters, like the crocodile icefish, could lose hemoglobin? ( unlike terrestrial organisms, marine organisms like fish use oxygen dissolved in water.)arrow_forwardWhat is the difference in the quaternary structure between fetal hemoglobin and adult hemoglobin? Which one can carry more oxygen?arrow_forwardWhich statement describes hemoglobin's cooperativity? A. When tetrameric hemoglobin binds one molecule of O2, its shape changes to make it bind more readily to a second molecule of O2. B. When tetrameric hemoglobin binds one molecule of O2 its shape changes, which prevents binding of any more O2 molecules. C. When oxygen is present in the blood, the shape of hemoglobin changes to allow oxygen to bind to it. D. When the oxygen concentration in blood decreases, then hemoglobin changes its shape to retain oxygen more readily. E. None of the above answer choices correctly describes cooperativity.arrow_forward
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- What must be the charge of the iron in hemoglobin for it to perform its function?arrow_forwardIn addition to O2 binding, changes in other chemical conditions can result in changes in hemoglobin structure and function. Increases in blood H+ result in oxygen binding curves for hemoglobin that are shifted to the right. The effect of H+ can be understood in terms of the equilibrium:H-Hb+ + O2 → Hb-O2 + H+How does the difference in pH in the lungs and tissues help hemoglobin do its job of delivering oxygen? Use the equilibrium equation in your argument.arrow_forwardThe binding of the first O2 to hemoglobin initiates a concerted _____________ transition.arrow_forward
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