Human Biology (MindTap Course List)
11th Edition
ISBN: 9781305112100
Author: Cecie Starr, Beverly McMillan
Publisher: Cengage Learning
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Textbook Question
Chapter 8, Problem 4SQ
In the lungs, the main factor in boosting the tendency of hemoglobin to bind with and hold oxygen is ___.
- a. temperature c. acidity (pH)
- b. the amount of O2 relative to the amount of CO2 in plasma
- c. acidity(pH)
- d. all are equally important
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Which of the links below are true?
a) The cysteine moieties in the beta globulin - nitric oxide transport
b) The globe component in hemoglobin - carbon dioxide transport
c) The home group in the hemoglobin - oxygen transport
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With the Bohr effect, more oxygen is released because a(n)____.
a) increase in pH(alkalosis) strengthens the hemoglobin-oxygen bond
b) increase in pH(alkalosis) weakens the hemoglobin-oxygen bond
c) decrease in pH (acidosis) weakens the hemoglobin-oxygen bond
d) decrease in pH (acidosis) strengthens the hemoglobin-oxygen bond
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.
Chapter 8 Solutions
Human Biology (MindTap Course List)
Ch. 8 - Prob. 1RQCh. 8 - What are the cellular components of blood? Where...Ch. 8 - Prob. 3RQCh. 8 - What is an agglutination response? How can it be...Ch. 8 - Prob. 5RQCh. 8 - Prob. 1SQCh. 8 - Prob. 2SQCh. 8 - Prob. 3SQCh. 8 - In the lungs, the main factor in boosting the...Ch. 8 - Which of the following statements about red blood...
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- In______, gas exchange occurs at the body surface and gas is distributed by diffusion alone. a. earthworm c. frogs b. flatworms d. insectsarrow_forwardDo the following conditions cause hemoglobin to release more O2 to the tissues or to absorb more O2?(a) Raising the temperature(b) Increased production of CO2(c) Increasing the H+ concentrationarrow_forwardWhy do you think this change in levels occurs about the oxygen levels as blood passes through the lungs? ?arrow_forward
- Interactions 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_forward1. A. the plasma ph of a person who is hyperventilating B. The plasma ph of a person who is hypoventilating 2. A. resistance to airflow in a bronchiole B. Resistance to airflow in the trachea 3. A. Atmospheric pressure during inspiration B. Pulmonary pressure during inspirationarrow_forwardAfter a person hypoventilates (such as by holding their breath), what can be detected on a molecular level? A. Increase in carbon dioxide is detected by both central and peripheral chemoreceptors. B. Decrease in oxygen is detected by both ventral and peripheral chemoreceptors. C. Decrease in carbon dioxide is detected by both central and peripheral chemoreceptors.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_forwardThe rate of diffusion would increase by? A) an increase in airway resistance B) a decrease in lung compliance C) a decrease in alveolar surface area D) a decrease in alveolar barrier thicknessarrow_forwardThe movement of gas from an area of higher pressure to an area of lower pressure until the partial pressures in the two areas become equal is caused by ________________. Group of answer choices A the partial pressure gradient B the solubility coefficient C active transport D cellular respirationarrow_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_forwardWhich of the following will NOT facilitate the transfer of oxygen to tissues? a. decreased body temperature b. decreased pH of the blood c. increased carbon dioxide d. increased exercisearrow_forwardCan you answer all the parts to this question regarding fish A: Describe countercurrent exchange in your own words. B: Describe concurrent exchange in your own words. C: Mammals have dead end sacs called “alveoli” and don’t have the super efficient countercurrent exchange system seen in fish. Why do you think countercurrent exchange is necessary for fish? (hint: think about the difference between where most mammals and fish live).arrow_forward
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