Biology
Biology
4th Edition
ISBN: 9781259188121
Author: Peter Stiling, Robert Brooker, Linda Graham, Eric Widmaier
Publisher: McGraw-Hill Education
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Chapter 48, Problem 10TY
Summary Introduction

Introduction: Body is composed of various types of the organ system. The organ system that transports blood along with important gases (oxygen and carbon dioxide) and nutrients from one part of the body to another is called the circulatory system. Humans contain the most complex circulatory system.

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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.
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.
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 myoglobin
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