Gen Combo Ll Biology; Connect W/learnsmart Labs Access Card
4th Edition
ISBN: 9781259853197
Author: Robert Brooker
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 48, Problem 10TY
Summary Introduction
Introduction: Body is composed of various types of the organ system. The organ system that transports blood along with important gases (oxygen and carbon dioxide) and nutrients from one part of the body to another is called the circulatory system. Humans contain the most complex circulatory system.
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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.
With rare exceptions, the majority of oxygen is transported in the bloodof vertebratesa. by binding to plasma proteins.b. by binding to hemoglobin in erythrocytes.c. as dissolved gas in the plasma.d. as dissolved gas in the cytoplasm in the erythrocytes.e. by binding to myoglobin.
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
Chapter 48 Solutions
Gen Combo Ll Biology; Connect W/learnsmart Labs Access Card
Ch. 48.1 - Prob. 1CCCh. 48.2 - Prob. 1CCCh. 48.2 - Prob. 2CCCh. 48.2 - Prob. 1BCCh. 48.2 - Prob. 3CCCh. 48.3 - Prob. 1CCCh. 48.3 - Prob. 2CCCh. 48.3 - Prob. 1EQCh. 48.3 - Prob. 2EQCh. 48.3 - Prob. 3EQ
Ch. 48.4 - Prob. 1CCCh. 48.4 - Prob. 2CCCh. 48.5 - Prob. 1BCCh. 48.7 - Can you think of an analogy to bronchodilation and...Ch. 48 - Prob. 1TYCh. 48 - Prob. 2TYCh. 48 - The process of bringing oxygenated water or air...Ch. 48 - Prob. 4TYCh. 48 - The countercurrent exchange mechanism in fish...Ch. 48 - The tracheal system of insects a. consists of...Ch. 48 - Prob. 7TYCh. 48 - Prob. 8TYCh. 48 - Prob. 9TYCh. 48 - Prob. 10TYCh. 48 - Prob. 1CQCh. 48 - Prob. 2CQCh. 48 - Prob. 3CQCh. 48 - Prob. 1COQCh. 48 - List the components of the mammalian respiratory...
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- 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_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_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
- Oxygen is mostly transported in the blooda. dissolved in plasma.b. bound to blood proteins.c. within HCO3−.d. bound to the heme portion of hemoglobin.arrow_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_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
- 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 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_forwardOxygen content of venous blood is measured in several vascular beds. Venous blood from which of the following organs most likely has the lowest content during rest? A. Brain B. Heart C . Kidney. D Lung. E. Skeletal musclearrow_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_forwardInteractions between the cardiovascular and respiratory system provide oxygen to the body.a. Describe the path of blood through the heart, including arteries and veins. Start at the blood entering the heart from the body. Indicate when blood is oxygenated and deoxygenated.b. Oxygen is transported by hemoglobin. Describe how pH affects the deposition of oxygen in tissues c. What are two sources of oxygen stores in the body to allow for rapid use when undergoing physical exertion? d. Which chamber of the heart is the most muscular, and why?arrow_forwardRespiratory organs of invertebrates and vertebrates are similar in that a. they use negative pressure breathing. b. they take advantage of countercurrent flow systems. c. they increase the surface area available for diffusion. d. the air flows through the organ in one direction.arrow_forward
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