Campbell Biology (11th Edition)

Published by Pearson
ISBN 10: 0-13409-341-0
ISBN 13: 978-0-13409-341-3

Chapter 2 - Test Your Understanding - Level 3 - Synthesis/Evaluation - Page 43: 10

Answer

It is easy to account for the similarities in elements found in organisms. Macromolecules are composed of the same elements regardless of the organism they're in. For example, DNA contain a various number of elements. Because all organisms have the same nucleotides, all will have the same elements.

Work Step by Step

All life evolved from a common ancestor. All organisms have similar needs, such as for energy and genetic coding.
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