TAILIEUCHUNG - Lecture Biology (7th edition) - Chapter 1: Exploring life

The wonderful assortment of lemurs on Madagascar is the result of evolution, the process that has transformed life on Earth from its earliest beginnings to the diversity of organisms living today. In this chapter, we begin our exploration of biology - the scientific study of life, its evolution, and its amazing diversity. | Lecture Biology (7th edition) - Chapter 1: Exploring life Chapter 1 Exploring Life PowerPoint Lectures for Biology, Seventh Edition Neil Campbell and Jane Reece Lectures by Chris Romero Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings • Overview: Biology’s Most Exciting Era • Biology – Is the scientific study of life Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings • The phenomenon we call life – Defies a simple, one-sentence definition Figure Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings • We recognize life – By what living things do Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings • Some properties of life (b) Evolutionary adaptation (a) Order (c) Response to the environment (e) Energy processing (d) Regulation (f) Growth and (g) Reproduction development Figure Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings • Concept : Biologists explore life from the microscopic to the global scale • The study of life – Extends from the microscope scale of molecules and cells to the global scale of the entire living planet Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings A Hierarchy of Biological Organization • The hierarchy of life – Extends through many levels of biological organization Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings • From the biosphere to organisms 1 The biosphere Figure Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings • From cells to molecules 9 Organelles 1 µm Cell 8 Cells Atoms 10 µm 10 Molecules 7 Tissues 50 µm 6 Organs and organ systems Figure Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings A Closer Look at Ecosystems • Each organism – Interacts with its environment • Both

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