Campbell Biology (10th Edition)
Campbell Biology (10th Edition)
10th Edition
ISBN: 9780321775658
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
Question
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Chapter 2, Problem 2.1CR

75658-2-2.1CR

Summary Introduction

To explain: How the need for iodine or iron in the diet differs from that of calcium or phosphorus.

Introduction: Essential elements are the natural elements that are needed by an organism for healthy living and biological functions such as growth and reproduction. There are about 25 essential elements required by the human body. Trace elements are the essential elements that are only needed in very small quantities by living organisms, and constitute only 0.01 percent of the biomass. Some examples of trace elements are iron, boron, cobalt, magnesium, molybdenum, tin, zinc, fluorine, cobalt, boron, chromium, and selenium. The elements that are required in a much larger quantity are called macroelements.

Expert Solution & Answer
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Explanation of Solution

Calcium and phosphorus are important components of bone and teeth. The body requires higher quantities of calcium and phosphorus. Iodine and iron are the important elements required by the body in trace amounts. Iodine is an essential ingredient of the thyroid hormone produced by the thyroid gland. It is required by vertebrates. Iron is required by all forms of life. It is an important component of hemoglobin.

Conclusion

The body requires higher quantities of calcium and phosphorus and lower amounts of iodine or iron.

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