BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Chapter 35, Problem 4CT
A developing fetus gets oxygen from its mother’s blood. Fetal capillaries run through pools of maternal blood in an organ called the placenta. As fetal blood runs through these capillaries, it exchanges substances with the maternal blood around the capillary. The hemoglobin made by a fetus is different than that made after birth. Fetal hemoglobin binds oxygen more strongly at low oxygen levels than normal hemoglobin. How would fetal hemoglobin’s somewhat higher affinity for oxygen benefit the fetus?
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In carbon monoxide (CO) poisoning, CO binds to the heme of hemoglobin much tighter than oxygen (O2). What effect will this have on the ability of the tissues to get oxygen?
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a.hemoglobin
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Chapter 35 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 35 - Respiratory proteins such as hemoglobin...Ch. 35 - In______, gas exchange occurs at the body surface...Ch. 35 - Countercurrent flow of water and blood increases...Ch. 35 - In human lungs, gas exchange occurs at the...Ch. 35 - Prob. 5SACh. 35 - During inhalation, ________. a. the thoracic...Ch. 35 - What type of metal associates with hemoglobin?Ch. 35 - Prob. 8SACh. 35 - Prob. 9SACh. 35 - The medulla oblongata ___________. a. produces...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- 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.arrow_forwardWhich of the following statements best describes the function of the pulmonary arteries or veins? Pulmonary arteries carry deoxygenated blood from the right ventricle of the heart to the lungs. Pulmonary arteries carry deoxygenated blood to the right atrium of the heart from the lungs. Pulmonary veins carry deoxygenated blood from the lungs to the left atrium of the heart. Pulmonary veins carry oxygenated blood from the lungs to the right atrium of the heart.arrow_forwardDuring pregnancy a special fetal hemoglobin was made with the following characteristics: It binds oxygen with an affinity lower than adult hemoglobin. It does not bind carbon monoxide. It is a monomer. It does not use heme as a co-factor. It binds oxygen with an affinity higher than adult hemoglobin.arrow_forward
- The binding of the first O2 to hemoglobin initiates a concerted _____________ transition.arrow_forwardThe characteristic that enables efficient gas exchange in capillaries is: Group of answer choices the very short total length of the capillaries. their proximity to the heart. thick walls of connective and muscle tissue. thin walls that are only one cell wide. the long total length of the capillaries.arrow_forwardLike typical fish, the crocodile icefish still need and use oxygen for metabolism. Explain why only fish that evolved to live in cold waters, like the crocodile icefish, could lose hemoglobin? ( unlike terrestrial organisms, marine organisms like fish use oxygen dissolved in water.)arrow_forward
- 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 myoglobinarrow_forwardWhich of the following factors would increase the oxygen carrying capacity of the blood? Question 6 options: A 50% increase in hematocrit in combination with blood cells that have half the concentration of hemoglobin? A 20% increase in myoglobin levels. An increase in temperature. An increase in pH none of the above would increase the total amount of oxygen carried by the bloodarrow_forwardWhen a person develops a fever, which of the following statements hemoglobin saturation are correct? - Modify the structure of hemoglobin and decrease its affernity for O2 - Can shift the O2-hemoglobin dissociation curve to the right - Decrease O2 unloading occurs in the tissue - Modify the structure of hemoglobin and increase its affernity for O2 - Can shift the O2 hemoglobin dissociation curve to the left - Enhance O2 unloading occurs in the tissuearrow_forward
- The kidneys are responsible for removing excess H+ ions from the blood. If the kidneys fail, what will happen to blood pH: hemoglobin’s affinity for oxygen:arrow_forwardWith the appearance of strong oxidizers in blood in erythrocytes one of the following substances is formed first of all: 1. carbhemoglobin 2. carboxyhemoglobin 3. oxyhemoglobin 4. methemoglobin 5. deoxyhemoglobinarrow_forwardHemoglobin returning to the lungs will aid in vasodilation in response to: Group of answer choices picking up CO2 picking up oxygen high CO2 levels low CO2 levels more than one of the abovearrow_forward
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