Biology: The Unity and Diversity of Life (MindTap Course List)
15th Edition
ISBN: 9781337408332
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Textbook Question
Chapter 38, Problem 10SQ
At high altitudes, _______.
- a. nitrogen bubbles out of the blood
- b. hemoglobin has fewer oxygen-binding sites
- c. there are fewer O2 molecules per unit volume of air than at low altitudes
- d. there is more carbon monoxide than at sea level
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Most oxygen transported in human blood______ . a. is bound to hemoglobin b. combines with carbon to form carbon dioxide c. is in the form of bicarbonate d. is dissolved in the plasma
The alveoli of mammalian lungs do not contain 20.9% O2 (that is, the percentage of O2 in atmospheric dry air) because
A.
there is dead space in the trachea and bronchial tree and the air in the lungs is humidified.
B.
mammals do not normally ventilate the lungs at a high enough rate.
C.
the trachea and bronchi are too small in volume to contain this amount of O2.
D.
mammal lungs have too many alveoli to ventilate.
E.
some O2 has been exchanged with the blood before reaching the alveoli.
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.
Chapter 38 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 38 - Prob. 1DAACh. 38 - Smoking and Lung Function Data from the Coronary...Ch. 38 - Smoking and Lung Function Data from the Coronary...Ch. 38 - The respiratory protein hemocyanin _______. a....Ch. 38 - In a _______, air flows continually across the...Ch. 38 - Prob. 3SQCh. 38 - In human lungs, gas exchange occurs at the ______....Ch. 38 - Which holds the most dissolved oxygen? a. warm,...Ch. 38 - When you breathe quietly, inhalation is _______...Ch. 38 - During inhalation _______. a. the thoracic cavity...
Ch. 38 - Prob. 8SQCh. 38 - Most oxygen transported in human blood _______. a....Ch. 38 - At high altitudes, _______. a. nitrogen bubbles...Ch. 38 - Countercurrent flow allows _______ to maximize...Ch. 38 - ______ in arteries sense changes in the acidity of...Ch. 38 - Vital capacity is the _______. a. amount of...Ch. 38 - Prob. 14SQCh. 38 - Match the words with their descriptions. ____...Ch. 38 - Prob. 1CTCh. 38 - Prob. 2CTCh. 38 - Icefish live in the extremely cold ocean near...
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- which of the following processes causes most of the carbon dioxide from the blood to move into the alveoli? a. passive transport using a carrier proteins b. active transport using energy c. conversion to carbon dioxide d. diffusion down a concentration gradientarrow_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_forwardVentilation of alveoli above the needs of metabolism tends to A. Increase the hydrogen ion concentration in the blood B. Increase the carbon dioxide concentration in the blood C. Leads to respiratory acidosis D. Decrease the carbon dioxide concentration in the blood E. Decrease the pH of the bloodarrow_forward
- The information provided suggests that: A. hemoglobin has more affinity to oxygen than to carbon monoxide. B. hemoglobin has more affinity to carbon dioxide than to carbon monoxide. C .carbon monoxide likely shifts the O2-Hb dissociation curve to the right. D. None of the abovearrow_forwardInside a red blood, an oxygen molecule binds what other molecule? A. Glucose B. Hemoglobin C. Carbon Dioxide D. Alveoliarrow_forwardSelect the disease which makes lungs lose its elasticity due to the inflammation of alveoli. A. Lung cancer B. Pneumonia C. Bronchitis D. Emphysema Recognize the correct adjustment in our body during acclimatization tohigh altitude. A. Ventilation rate decreases B. Hemoglobin affinity for oxygen increases in the tissue C. Kidney increases urinary excretion of bicarbonate ions D. Hemoglobin production decreasesarrow_forward
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