Campbell Biology (10th Edition)

Published by Pearson
ISBN 10: 0321775651
ISBN 13: 978-0-32177-565-8

Chapter 1 - 1.1 - Concept Check: 1


Organelles are the functional elements within cells. Cells are individual units of life. Cells are all able to perform all the necessary functions of life. For example, tissues are comprised of groups of cells working together to perform a singular function. Multiple tissues make up an organ, a body part that carries out a particular function. An organ system is made up of several organs that work together to perform a larger function. An organism is a living entity that is capable of doing so independently. Many organisms, of the same species, that live together within a specified area constitute a population. A community is a group of organisms, from different species, that live together in a shared environment. A group of living organisms, as well as the non-living things with which they interact, that are found in any particular area make up an ecosystem. The biosphere is the area around the Earth, including the surface of the Earth and the atmosphere around it, where life exists.

Work Step by Step

Consider the constituent parts of each level of organization.
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