Biology 2010 Student Edition

Published by Prentice Hall
ISBN 10: 9780133669510
ISBN 13: 978-0-13366-951-0

Chapter 25, Introduction to Animals - Assessment - 25.1 What is an Animal? - Understand Key Concepts/Think Critically - Page 746: 7


Animals are all eukaryotes, multicellular, and heterotrophs.

Work Step by Step

Animals are multicellular, meaning each organism is composed of more than one cell. Their cells are eukaryotic, meaning their cells have nuclei and membrane-bound organelles. Animals are also heterotrophic, meaning they have to consume other organisms for their energy needs.
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