EBK HUMAN BIOLOGY
11th Edition
ISBN: 8220100545931
Author: MCMILLAN
Publisher: Cengage Learning US
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Chapter 10, Problem 9SQ
Summary Introduction
Introduction: Hemoglobin is a globular protein molecule that is located in erythrocytes (red blood cells). It is composed of four subunits namely two alpha subunits and two beta subunits. Each subunit of hemoglobin surrounds a central heme group that contains iron.
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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.
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 10 Solutions
EBK HUMAN BIOLOGY
Ch. 10 - In the diagram below, label the parts of the...Ch. 10 - What is the difference between respiration and...Ch. 10 - Explain what a partial pressure gradient is and...Ch. 10 - What is oxyhemoglobin? Where does it form?Ch. 10 - What drives oxygen from the air spaces in alveoli,...Ch. 10 - How does hemoglobin help maintain the oxygen...Ch. 10 - What reactions enhance the transport of carbon...Ch. 10 - How do nerve impulses from the brain regulate...Ch. 10 - Why does your breathing rate increase when you...Ch. 10 - A partial pressure gradient of oxygen exists...
Ch. 10 - The ________ is an airway that connects the nose...Ch. 10 - Oxygen in air must diffuse across______ to enter...Ch. 10 - Prob. 4SQCh. 10 - Gas exchange occurs at the _______. a. two bronchi...Ch. 10 - Breathing _______. a. ventilates the lungs b....Ch. 10 - After oxygen diffuses into lung capillaries, it...Ch. 10 - Due to its partial pressure gradient, carbon...Ch. 10 - Prob. 9SQCh. 10 - Prob. 10SQCh. 10 - Cases of accidental carbon monoxide poisoning...Ch. 10 - Prob. 2CTCh. 10 - When you sneeze, abdominal muscles abruptly...Ch. 10 - Underwater, we humans cant compete with whales and...Ch. 10 - Prob. 5CT
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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 are most closely associated with oxygen transport? (a) red blood cells (b) platelets (c) neutrophils (d) basophils (e) lymphocytesarrow_forwardInside a red blood, an oxygen molecule binds what other molecule? A. Glucose B. Hemoglobin C. Carbon Dioxide D. Alveoliarrow_forward
- Which 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_forwardHaemoglobin... A. Consists of one or more globin proteins, each with a copper-containing heme group B. Increases the concentration of O₂ in the blood C. Is present only in vertebrates D. Is located within "pink cells" that circulate in the blood E. All of the abovearrow_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
- 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.arrow_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_forwardIn 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_forward
- factors 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_forwardThe process by which leukocytes squeeze through adjacent cells in a blood vessel wall is called a. leukocytosis b. positive chemotaxis c. emigration d. cytoplasmic extendingarrow_forward8)After blood is “used” by cells, in other words they’ve taken the oxygen, where does it go? Select one: a. Back to the lungs for more oxygen b. Back to the heart and then on to the lungs for more oxygen c. Back to the heart to return to the body for more oxygen d. Back to the capillary beds for more oxygen e. Back to the brain, where the oxygen level is monitoredarrow_forward
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