Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 42, Problem 22TYK
Summary Introduction
Introduction: Blood is a fluid tissue that circulates around the body through blood vessels. Blood transports all the essential nutrients and gases to all the body tissues. Gaseous exchange in the blood occurs at the lungs, and gases are transported to the tissues by the pumping organ, heart.
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All 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.
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 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.
Chapter 42 Solutions
Study Guide for Campbell Biology
Ch. 42 - Prob. 1IQCh. 42 - Prob. 2IQCh. 42 - In the following diagram of a mammalian...Ch. 42 - a. Name the valve between an atrium and ventricle....Ch. 42 - Prob. 5IQCh. 42 - Prob. 6IQCh. 42 - Prob. 7IQCh. 42 - What lifestyle choices have been correlated with...Ch. 42 - Prob. 9IQCh. 42 - Prob. 10IQ
Ch. 42 - Prob. 11IQCh. 42 - Identify the labeled structures in the following...Ch. 42 - Prob. 2SYKCh. 42 - Prob. 1TYKCh. 42 - Prob. 2TYKCh. 42 - Prob. 3TYKCh. 42 - Prob. 4TYKCh. 42 - During diastole, a. blood fills the atria and...Ch. 42 - Prob. 6TYKCh. 42 - As a general rule, blood leaving the right...Ch. 42 - The nurse tells you that your blood pressure is...Ch. 42 - Blood flows more slowly in arterioles than in...Ch. 42 - Prob. 10TYKCh. 42 - Prob. 11TYKCh. 42 - Prob. 12TYKCh. 42 - Prob. 13TYKCh. 42 - Exchange between the blood and the tissues of the...Ch. 42 - Which of the following processes would tend to...Ch. 42 - Prob. 16TYKCh. 42 - Prob. 17TYKCh. 42 - Prob. 18TYKCh. 42 - Prob. 19TYKCh. 42 - Prob. 20TYKCh. 42 - What do the alveoli of mammalian lungs, the gill...Ch. 42 - Prob. 22TYKCh. 42 - Prob. 23TYKCh. 42 - Prob. 24TYKCh. 42 - Prob. 25TYKCh. 42 - Prob. 26TYK
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- Which of the following is incorrect? a. Hemoglobin transports oxygen through the blood from the lungs to the tissues Ob. None; all the other choices are correct c. Hemoglobin transports H+ through the blood from the tissues to the lungs O d. Lower pH increases hemoglobin's O₂-binding affinityarrow_forwardWhich 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.arrow_forwardWhich of the components of hemoglobin is correctly matched with itsfate following the destruction of a red blood cell?a. heme—reused to form a new hemoglobin moleculeb. globin—broken down into amino acidsc. iron—mostly secreted in biled. All of these are correctarrow_forward
- If 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_forwardWhich of the following factors would increase the amount of oxygen discharged by hemoglobin to peripheral tissues? a. decreased amounts of DPG b. increased tissue PO2 c. decreased pH d. decreased temperature e. all of the abovearrow_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_forward
- Which 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_forwardHemoglobin: A. binds either oxygen or carbon monoxide on its heme group B. molecules can each bind 4 oxygen molecules C. both molecules can each bind 4 oxygen molecules and binds either oxygen or carbon monoxide on its heme group D. molecules can each bind 4 oxygen molecules, and has a higher affinity for carbon dioxide E. has a higher affinity for carbon dioxide than for oxygenarrow_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_forward
- In order for oxygen to be transported an arterial blood it can a. All answers are correct b. attached to hemoglobin and float freely in the plasma c.attached to bicarbonate d. attached to hemoglobin e.float freely in the plasmaarrow_forwardWhich of these is a true statement?a. In lung capillaries, carbon dioxide combines with water toproduce carbonic acid.b. In tissue capillaries, carbonic acid breaks down to carbondioxide and water.c. In lung capillaries, carbonic acid breaks down to carbondioxide and water.d. In tissue capillaries, carbonic acid combines with hydrogenions to form the carbonate ion.e. All of these statements are true.arrow_forwardCarbon dioxide is carried in many ways in the blood. Which of the following is not a location where CO2 can be carried in the blood? a. In the plasma as H2CO3 b. In the RBC combined to globin c. In the plasma as HCO3- d. In the plasma as CO2arrow_forward
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