Human Biology: Concepts and Current Issues (8th Edition)
8th Edition
ISBN: 9780134042435
Author: Michael D. Johnson
Publisher: PEARSON
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Question
Chapter 7, Problem 4TY
Summary Introduction
Introduction:
The formed elements and plasma are the main components of the whole blood. The formed elements include living cells and cell fragments like WBCs (white blood cells), RBCs (red blood cells), and platelets.
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Which 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.
Which of the following is true about the proximal histidine of hemoglobin?
A. It forms a hydrogen bond with bound oxygen.
B. It is bonded to the Fe2+ atom coordinated by heme
C. It binds oxygen
D. It is not consumed in myoglobin
Which of the following statements is true about hemoglobin?
a.hemoglobin
b. Each hemoglobin molecule is made up of one alpha and one beta chain polypeptide.
C. All that is needed to bind oxygen is a molecule of heme.
D. Each hemoglobin molecule can carry four oxygen molecules.
Chapter 7 Solutions
Human Biology: Concepts and Current Issues (8th Edition)
Ch. 7 - Prob. 1QCCh. 7 - Prob. 2QCCh. 7 - Describe the functions of blood.Ch. 7 - Prob. 2CRCh. 7 - Explain how the production of red blood cells is...Ch. 7 - Prob. 4CRCh. 7 - Prob. 5CRCh. 7 - Prob. 6CRCh. 7 -
7. Describe the mechanism of hemostasis.
Ch. 7 - Prob. 8CR
Ch. 7 - Prob. 9CRCh. 7 - Prob. 10CRCh. 7 - Prob. 1TYCh. 7 - Prob. 2TYCh. 7 - Prob. 3TYCh. 7 - Prob. 4TYCh. 7 - Prob. 5TYCh. 7 -
6. A person with Type A- (A-negative) blood will...Ch. 7 - Prob. 7TYCh. 7 - Prob. 8TYCh. 7 - Prob. 9TYCh. 7 - Prob. 10TYCh. 7 -
11. Which white blood cells are present in the...Ch. 7 - Prob. 12TYCh. 7 - Prob. 13TYCh. 7 - Prob. 14TYCh. 7 - Prob. 15TYCh. 7 - Prob. 1AWKCh. 7 - Prob. 2AWKCh. 7 - Prob. 3AWKCh. 7 - Prob. 4AWKCh. 7 - Prob. 5AWKCh. 7 -
6. Coumadin is an anticoagulant drug that is...
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- The respiratory system_______. a. provides body tissues with oxygen b. provides body tissues with oxygen and carbon dioxide c. establishes how many breaths are taken per minute d. provides the body with carbon dioxidearrow_forwardWhich of the following describe(s) a characteristic or function of hemoglobin?a. Hemoglobin consists of four chains of amino acids.b. A hemoglobin molecule contains four iron ions to carry oxygen.c. In addition to transporting oxygen, hemoglobin molecules carry carbon dioxide and hydrogen ions.d. Hemoglobin is a protein found in all formed elements.e. There are four hemoglobin molecules in each red blood cell.arrow_forwardAll of the following are accurate statements about hemoglobin except a. hemoglobin carries oxygen on the Fe ion. b. hemoglobin carries carbon dioxide on the globin. c. hemoglobin carries only a small portion of the total carbon dioxide in the blood (less than 25%). d. hemoglobin releases oxygen at the level of the cell, making hemoglobin more saturated.arrow_forward
- Which of the following stabilize the hemoglobin quaternary structure of low-affinity to oxygen molecules? Group of answer choices a. CO b. CO2 c. bisphosphoglycerate d. H+arrow_forwardWhich molecule has the greatest ability to stabilize the deoxy state of hemoglobin? Select one: a. all have equal ability b. ВPG C. CO d. H e. Co2arrow_forwardCarbon Dioxide is carried in the blood by all the following means except: a. dissolved in plasma b. as bicarbonate c. as carbonic acid d. bound to hemoglobin e. all of these methods are used to transport carbon dioxide in bloodarrow_forward
- Which of the following statements is INCORRECT about how the components of hemoglobin are recycled? a. Iron ions are either stored in a phagocytic cell or circulate in the blood, bound to transferrin (a plasma protein). b. Each heme is stripped of its iron and converted to bilirubin, then excreted in bile. c. The alpha and beta chains are released into the bloodstream for use by other cells. d. Hemoglobin can be recycled only if phagocytized by macrophages.arrow_forwardWhich of the following causes an increase in hemoglobin’s 02 affinity? A. An increase in the partial pressure of oxygen. B. A decrease in ph C. An increase in the concentration of 2,3 -BPG D. An increase in the partial pressure of carbon dioxidearrow_forwardfactors that affect the unloading (releasing ) of oxygen more quickly from hemoglobin include all the following except a. increased pressure of CO2 b. elevated chlorine ions c. increased temp d. lowered pHarrow_forward
- Inside a red blood, an oxygen molecule binds what other molecule? A. Glucose B. Hemoglobin C. Carbon Dioxide D. Alveoliarrow_forwardCarbon monoxide poisoning occurs because a. CO2 and O2 compete for the same binding site on hemoglobin. b. CO and CO2 compete for the same binding site. c. Hemoglobin in the presence of CEO destroys the oxygen. d. All answers are correctarrow_forwardIf the blood lacked red blood cells but the lungs were functioning normally, A. The arterial PO2 would be normal. B. The oxygen content of arterial blood would be normal. C. Both A and B would apply. D. Neither A nor B would apply Which of the following would be most affected by a decrease in the affinity of hemoglobin for oxygen? A. Arterial PO2 B. Arterial percent oxyhemoglobin saturation C. Venous oxyhemoglobin saturation D. Arterial PCO2arrow_forward
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