Campbell Biology:Concepts & Connections Special Edition for NorthWest Arkansas Community College Biology 1544
8th Edition
ISBN: 9781269954020
Author: Martha Taylor, Eric Simon, Jean Dickey, and Kelly Hogan Jane Reece
Publisher: PEARSON C
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Question
Chapter 22, Problem 14TYK
Summary Introduction
To explain:
The importance of the training strategy in improving an athlete’s performance. Also determine the reason why some runners and cyclists prepare themselves for competition by training at high altitudes or by sleeping in a tent in which PO2 is kept artificially low.
Concept introduction:
The percentage of oxygen is fairly constant at different altitudes, but the decrease in the atmospheric pressure at high altitudes decreases the inspired oxygen partial pressure, causing gas exchange pressure at the lung site.
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After spending a day or more at high altitude (with an oxygen partial pressure of 75 torr), the concentration of 2,3- bisphosphoglycerate (2,3-BPG) in red blood cells increases. What effect would an increased concentration of 2,3-BPG have on the oxygen-binding curve for hemoglobin? Why would this adaptation be beneficial for functioning well at high altitude?
When we change altitude, during the next few days, the body responds by adjusting Hb cooperativity. This can be accomplished by changing the concentration of 2,3-BPG in the blood.
After moving from a low altitude to a higher altitude, does 2,3,-BPG increase or decrease? Explain how this affects oxygen transport capacity
In which range of partial pressure of oxygen does hemoglobin have the weakest bond with oxygen?
a. Above 60 mmHg
b. Between 60-100 mmHg
c. Above 100 mmHg
d. Below 60 mmHg
Chapter 22 Solutions
Campbell Biology:Concepts & Connections Special Edition for NorthWest Arkansas Community College Biology 1544
Ch. 22 - Complete the following concept map to review some...Ch. 22 - Label the parts of the human respiratory system.Ch. 22 - Prob. 3TYKCh. 22 - Countercurrent gas exchange in the gills of a fish...Ch. 22 - Prob. 5TYKCh. 22 - Prob. 6TYKCh. 22 - Prob. 7TYKCh. 22 - Prob. 8TYKCh. 22 - Prob. 9TYKCh. 22 - What are two advantages of breathing air, compared...
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- Explain what a partial pressure gradient is and how such gradients figure in gas exchange.arrow_forwardDescribe the relationship between the partial pressure of oxygen and the binding of oxygen to hemoglobin.arrow_forwardCarbon dioxide when traveling in the form of bicarbonate ion does so ______ a. bonded to water b. associated to hemoglobin c. within the plasma of blood d. within the red blood cellarrow_forward
- Henry climbed to the top of Mt. Apo. To celebrate, he drank a glass of whiskey. At higher altitude oxygen gas decreases. What do you expect to happen to Henry’s respiratory rate? Will this result to respiratory alkalosis or acidosis? Explain.arrow_forwardWhy do you think this change in levels occurs the oxygen levels as blood passes through the lungs?arrow_forwardWrite the reversible equation that shows the reaction of hemoglobin (Hb) with: A. Oxygen B. Carbon dioxidearrow_forward
- The property of air that changes dramatically with altitude and effects breathing is ____________arrow_forwardScenario: In Charles’ blood, the partial pressure of CO in the blood (0.4 mm Hg) is far lower than the partial pressure of O2, yet the percent saturation of hemoglobin by each gas is approximately equal. What does this tell you about the affinity of hemoglobin for CO?arrow_forward
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