WHAT IS LIFE? ACHIEVE 1 TERM ACCESS CODE
5th Edition
ISBN: 9781319516116
Author: PHELAN
Publisher: MAC HIGHER
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Chapter 22, Problem 8MC
Summary Introduction
Introduction:
CO has the same binding site on hemoglobin, as oxygen.
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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 NOT a way that carbon dioxide exits the body? *
A. carbon dioxide travels down the concentration gradient and is able to diffuse from the tissues directly out of the body through its pores.
B. carbon dioxide dissolves directly into the blood plasma to be carried to the lungs where it will be exhaled.
C. Carbon dioxide binds with hemoglobin as red blood cell pass through tissues and is released as the blood cells reached the lungs.
D. carbon dioxide converts into bicarbonate ions in the blood as it diffuses from the tissues and converts back to carbon dioxide as it reaches the lungs to be exhaled
PLS ANSWWER ASP THANK YOUU SO MUCH
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.
Chapter 22 Solutions
WHAT IS LIFE? ACHIEVE 1 TERM ACCESS CODE
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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_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_forwardWhich 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 myoglobinarrow_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_forwardUse the image to answer the question. The ability of oxygen to bind hemoglobin changes with altitude as shown. Which statement, if true, BEST explains this observation? A. The partial pressure of atmospheric oxygen decreases with altitude. B. The partial pressure of atmospheric oxygen increases with altitude. C. The partial pressure of atmospheric carbon dioxide decreases with altitude. D. The partial pressure of atmospheric carbon dioxide increases with altitude.arrow_forwardWhat has the highest affinity for oxygen? a. Maternal hemoglobin without 2,3-bisphosphoglycerate b. Myoglobin c. Maternal hemoglobin with 2,3-bisphosphoglycerate d. Fetal hemoglobin with 2,3- bisphosphoglyceratearrow_forward
- An obstruction in the trachea could cause: A. A drop in the body's pH B. An increase in the body's pH C. Acidosis D. Both A & Carrow_forward73) The Haldane Effect says that it is easier for CO2 to bind to hemoglobin once oxygen has dissociated from the heme group. Group of answer choices True False 74) In the homeostatic regulation of blood oxygen levels, the central processor is the ________. Group of answer choices Blood Oxygen Levels CO2 Receptors Kidney Red Bone Marrow Lungs 75) Boyle’s Law states that there is a directly proportional relationship between the volume of a container and the pressure within that container. Group of answer choices False True 76) All Red Blood Cells are replenished at the same time. Group of answer choices True Falsearrow_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 occurs when a hemoglobin molecule binds oxygen in the lungs? a The first O2 molecule binds more easily than the last O2 molecule. b Each heme group can reversibly bind four O2 molecules simultaneously. c Salt bridges between subunits break as the first O2 binds. d Cooperative binding of O2 causes the four subunits to dissociate e An iron atom is removed from a porphyrin group.arrow_forwardWhere is the actual exchange of oxygen and carbon dioxide take place?* a. Veins b. Artery c. Capillaries 2. What type of blood vessels that contain valves to ensure blood flows in only one direction?* a. Veins b. Capillaries c. Artery What type of blood vessel that carry oxygenated blood away from the heart and also contain a strong, muscular middle layer that helps pump blood through the body? a. Capillaries b. Veins c. Arteryarrow_forwardWhich statement describes how carbon dioxide exits the bloodstream at its final destination? A. Carbon dioxide diffuses out of the alveolus into the blood from high to low concentration.. B. Carbon dioxide diffuses out of the blood into the alveolus from high to low concentration.. C. Carbon dioxide diffuses out of the blood into the alveolus from low to high concentration.. D. Carbon dioxide diffuses out of the alveolus into the blood from low to high concentration..arrow_forward
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