WHAT IS LIFE? ACHIEVE 1 TERM ACCESS CODE
5th Edition
ISBN: 9781319516116
Author: PHELAN
Publisher: MAC HIGHER
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Chapter 22, Problem 9MC
Summary Introduction
Introduction:
Hemoglobin is the molecule that binds oxygen.
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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 affinity
Which 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. Co2
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.
Chapter 22 Solutions
WHAT IS LIFE? ACHIEVE 1 TERM ACCESS CODE
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- 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_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_forwardWhich 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_forward
- Which of the following is true about the T (tense) -->R (relaxed) transition of hemoglobin? A. The T state of hemoglobin binds oxygen with a higher affinity than the R state. B. The binding of O2 to a subunit T state can cause the transition of other subunits to the R state. C. The T state has a narrower pocket between b subunits than does the R state. D. When hemoglobin undergoes the T--> R transition, the structures of the individual subunits change dramatically.arrow_forwardWhich of the following scenariosare correct?Select all that apply A. High levels of PCO2will cause loading of O2ontohemoglobin. B. An increase in pH will causeO2to unload from hemoglobin. C. High PO2levels will increase saturation of Hb with O2. D. An increase in bodytemperature will cause O2to unload from hemoglobin.arrow_forwardWhat is the biological advantage to the sigmoidal binding curve of hemoglobin for oxygen? A. It ensures that hemoglobin has a high affinity for oxygen. B. It allows hemoglobin to bind oxygen irreversibly. C. It ensures that hemoglobin can bind oxygen only weakly. D. It allows hemoglobin to shift between low and high affinities for oxygen.arrow_forward
- Which statement is true for the heme group present myoglobin: a. Oxygen binding to heme group is influenced by serine residues within proteins’ sequences. b. Oxygen binding to heme can become irreversible as a result of interaction with certain protein residues. c. Oxygen reversibly binds to the heme prostetic group and this binding is influenced by histidine residues within the myoglobin sequence. d. The heme group dissociates from Mb after oxygen is released.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_forwardPeople suffering with sickle cell anemia have a structural defect in hemoglobin (HB). The major reason for this structural change is mutation of glutamic acid to valine. This leads to a Exposure of polar amino acids, leading to disintegration of hemoglobin. b Burying of polar amino acids, leading to disintegration of hemoglobin. c Exposure of non-polar amino acids leading to long fiber formation. d Burying of non-polar amino acids thereby increasing hydrophobic interactions and formation of long fibres.arrow_forward
- Carbon 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_forwardO2 bound to hemoglobin: a. acts the same as physically dissolved oxygen b. Comes off the hemoglobin (dissociates) more easily as you increase the oxygen partial pressure c. exerts a partial pressure d. Comes off the hemoglobin (dissociates) more easily as you increase the acidity (decrease the pH) e. all the options are correct 2. Air convection in mammals is driven by a smaller pressure gradient than blood convection because: a. Bronchioles have a greater resistance to flow than arterioles b. bronchioles tend to have a smaller radius than arterioles and capillaries c. air is easier to move with pressure gradients than blood d. air generally travels farther in your body than does blood e. air is heavier than blood 3. The rate of diffusion of gases is NOT determined by which of the following? a. The area of the surface across which diffusion is occurring b. The mechanical energy…arrow_forwardA. The affinity of oxygen to hemoglobin in Baguio City B. The affinity of oxygen to hemoglobin at sea level O A. The FIRST quantity is the larger of the 2. O B. The SECOND quantity is the larger of the 2. O C. The two quantities are EQUAL in size A. The rate at which O2 detaches from hemoglobin when temperature is high B. The rate at which O2 detaches from hemoglobin when temperature is low O A. The FIRST quantity is the larger of the 2. O B. The SECOND quantity is the larger of the 2. C. The two quantities are EQUAL in sizearrow_forward
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