Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780321962751
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 34, Problem 11TYU
Summary Introduction
To relate:
The mechanism of O2 transport in the human body with the preparation of athletes to climb mountains.
Introduction:
The oxygen content in the atmosphere is 21%. As a person goes up the altitude, the partial pressure of oxygen (
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A fish swims from a body of cool water into a body of warm water. As its body temperature rises, its rate of O2 consumption increases. The warm water, however is likely to have a lower concentration of dissolved O2 than the cool water because the solubility of O2 in water decreases as temperature increases. These two factors taken together, an increase in the fish's rate of O2 consumption and a decrease in the dissolved O2 concentration of its environmental water, can make it difficult for the fish to obtain enough O2 to meet its needs. The two factors can act as a two-pronged trap. Actually, however, the fish may face a three-pronged trap. How is the increase in temperature likely to affect the O2 affinity of the fish's hemoglobin, and how could the effect on hemoglobin add even further to the challenge the fish faces? Does global warming pose concerns of this sort?
Perch, Frog and Pig.
1. Why do these organisms require a specialized organ to increase surface area for gas exchange? Discuss organismal volume relative to surface area in your answer.
2. Why are these respiratory structures associated with a large blood supply?
Practice concentration gradients:
A) Active tissues generate carbon dioxide during cell respiration. This carbon dioxide diffuses out of the tissue into the bloodstream.
1) where is the higher concentration of carbon dioxide ?
2) is Carbon dioxide flowing down or against its concentration gradient ?
3) Is energy required for the movement of carbon dioxide ?
Calculate concentration gradient
solute 55M Solute 52M
Chapter 34 Solutions
Campbell Biology in Focus (2nd Edition)
Ch. 34.1 - How is the now of hemolymph through an open...Ch. 34.1 - Three-chambered hearts with incomplete septa were...Ch. 34.1 - Prob. 3CCCh. 34.2 - Prob. 1CCCh. 34.2 - Why is it important that the AV node delay the...Ch. 34.2 - Prob. 3CCCh. 34.3 - What is the primary cause of the low velocity of...Ch. 34.3 - Prob. 2CCCh. 34.3 - Prob. 3CCCh. 34.4 - Prob. 1CC
Ch. 34.4 - Prob. 2CCCh. 34.4 - Prob. 3CCCh. 34.4 - Prob. 4CCCh. 34.5 - Why is an internal location for gas exchange...Ch. 34.5 - After a heavy rain, earthworms come to the...Ch. 34.5 - MAKE CONNECTIONS Describe similarities in the...Ch. 34.6 - Prob. 1CCCh. 34.6 - Prob. 2CCCh. 34.6 - WHAT IF? If an injury tore a small hole in the...Ch. 34.7 - What determines whether O2, or CO2, undergoes net...Ch. 34.7 - How does the Bohr shift help deliver O2, to very...Ch. 34.7 - Prob. 3CCCh. 34 - Which of the following respiratory systems is not...Ch. 34 - Blood returning to the mammalian heart in a...Ch. 34 - Pulse is a direct measure of A. blood pressure. B....Ch. 34 - Prob. 4TYUCh. 34 - One feature that amphibians and humans have in...Ch. 34 - If a molecule of CO2 released into the blood in...Ch. 34 - Prob. 7TYUCh. 34 - DRAW IT Plot blood pressure against time for one...Ch. 34 - Prob. 9TYUCh. 34 - Prob. 10TYUCh. 34 - Prob. 11TYUCh. 34 - SYNTHESIZE YOUR KNOWLEDGE The diving bell spider...
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- Test Your Understanding 7. According to Ficks law of diffusion, a gas will diffuse faster if the (a) surface is reduced (b) difference in pressure is decreased (c) difference in pressure is increased (d) pH is lowered (e) a and carrow_forwardTest Your Understanding 13. INTEREPT DATA Look at Figure 46-10b. How would strenuous muscle activity affect the oxygenhemoglobin dissociation curve? (Hint: How does muscular activity affect pH? See Chapter 40 if you need to review this concept.) Figure 46-10 Oxygen-hemoglobin dissociation curvesarrow_forwardWhy do humans breathe?a. To eliminate CO2b. To support aerobic respiration in mitochondriac. To keep the respiratory surface dryd. Both a and b are correctarrow_forward
- 1) Electric eels are dependent on air breathing. They take up oxygen from the air that they gulp into their mouths and then blow back out. In what way are their mouths similar to gills? A) They both bring oxygen against its concentration gradient from the lower levels in the water or air to the higher levels in the blood. B) They both have large numbers of capillary beds very close to the skin. C) They both have large numbers of microvilli in their respiratory membrane to provide ATP for active transport of oxygen. D) ALL of these are correct. 2) Which of these accurately describes the buccopharyngeal pumping mechanism teleosts use to breathe? A) The volume of oral cavity is rapidly expanded with the mouth closed and the operculum open. B) The volume of the oral cavity is rapidly compressed with the mouth closed and the operculum open. C) Water from the surroundings is sucked into the gills during inspiration and blown back out during expiration. D) ALL of these are correct.arrow_forwardIn a non-biological system, given the equation CO2 + H2O ⇌ H2CO3 ⇌ HCO3- + H+ , what would happen to the amount of CO2 if HCO3- was taken away or removed in some way? (Hint: In chemistry, the concept is known as Le Chatlier's Principle) The amount of CO2 will increase to compensate for the lost HCO3- The amount of CO2 will decrease to compensate for the lost HCO3- The amount of CO2 will stay the samearrow_forwardProtons influence the binding affinity of oxygen to hemoglobin. Based on the oxygen-transport mechanism of hemoglobin, which of the following is correct? A. The pH value of lung is lower than that of tissue B. Protons compete with oxygen C. Protons will facilitate oxygen release in lung D. Production of lactate during exercise will accelerate oxygen delivery.arrow_forward
- 1. carbon dioxide released during respiration can affect the % oxygen saturation of haemoglobin. Carbon dioxide reacts with water to form carbonic acid. Which statements below explains the effect of carbon dioxide on haemoglobin? A. The release of hydrogen ions causes the pH to rise, which reduces haemoglobin's affinity for oxygen. B. The release of hydrogen ions causes the pH to rise, which increases haemoglobin's affinity for oxygen. C. The release of hydrogen ions causes the pH to fall, which increases haemoglobin's affinity for oxygen. D. The release of hydrogen ions causes the pH to fall, which reduces haemoglobin's affinity for oxygen. E. None of the above can explain the change. 2. The following events occur when carbon dioxide enters an erythrocyte in a capillary. 1. Hydrogencarbonate ions diffuse into the plasma from the red blood cells. 2. Dissociation of carbonic acid 3. Carbon dioxide reacts with water forming carbonic acid 4. Chloride ions…arrow_forwardAll our body tissues require O2 for their function. And, Hemoglobin does this job, i.e., hemoglobin transport the O2 to all the tissues. How will these conditions affect O2 transportation? 1. If CO2 increases in the lung. 2. If pH increases in the stomach tissue.arrow_forward(a) The partial pressure of CO2 in the lungs can be varied rapidly by the rate and depth of breathing. For example, a common remedy to alleviate hiccups is to increase the concentration of CO2 in the lungs. This can be achieved by holding one’s breath, by very slow and shallow breathing (hypoventilation), or by breathing in and out of a paper bag.Under such conditions, pCO2 in the air space of the lungs rises above normal. Qualitatively explain the effect of these procedures on the blood pH.(b) A common practice of competitive short-distance runners is to breathe rapidly and deeply (hyperventilate) for about half a minute to remove CO2from their lungs just before the race begins. Blood pH may rise to 7.60. Explain why the blood pH increases.(c) During a short-distance run, the muscles produce a large amount of lactic acid (CH2CH(OH)COOH; K2 = 1.38 × 10 –4 M) from their glucose stores. Why might hyperventilation before a dash be useful?arrow_forward
- What statement about hemoglobin's integrated transport of oxygen, carbon dioxide and protons is FALSE? Question 26 options: Lower pH leads to more oxygen being released into the tissues Protons can bind hemoglobin at a variety of sites, including histidine side chains. Proton binding stabilizes the R-form of hemoglobin. Hemoglobin binds bicarbonate and transports it from the tissues to the lungs Carbon dioxide binds to hemoglobin in the tissues and gets transported back to the lungsarrow_forwardFlying insects use a tracheal system to deliver oxygen directly to their tissues to support their high metabolism. Why did they not evolve a similar transport system to mammals which use circulating respiratory pigments?arrow_forwardIn addition to O2 binding, changes in other chemical conditions can result in changes in hemoglobin structure and function. Increases in blood H+ result in oxygen binding curves for hemoglobin that are shifted to the right. The effect of H+ can be understood in terms of the equilibrium:H-Hb+ + O2 → Hb-O2 + H+How does the difference in pH in the lungs and tissues help hemoglobin do its job of delivering oxygen? Use the equilibrium equation in your argument.arrow_forward
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