Test 1 - Chapter 1 Introduction to Life on Earth I. What...

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Chapter 1 Introduction to Life on Earth I. What is Biology? 1. The science of living organisms and life processes. II. The Characteristics of Life 1. Complex, organized structure 2. Response to stimuli i. A change outside (or inside) leads to another change 3. Homeostasis i. The ability to maintain the structure and regulate the internal environment 4. Ability to acquire material and energy i. The material and energy are often transformed 5. Growth 6. Reproduction i. DNA is genetic information, the “blueprint” for offspring 7. Ability to evolve—to change to fit the environment All life forms have these characteristics in common, yet there is an amazing diversity in the forms of life on the planet. III. Complex, organized structure 1. The complexity of life is built in levels (see fig 1-2) 2. Each level has ingredients or components which interact to make something greater than the sum of the parts. i. Emergent Properties 3. Fig 1-2 i. Biosphere—that part of Earth inhabited by living organisms; includes both the living and nonliving components ii. Ecosystem—a community together with its nonliving surroundings iii. Community—two or more populations of different species living and interacting in the same area iv. Species—very similar, potentially interbreeding organisms
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This note was uploaded on 05/04/2010 for the course BIOL 1001 taught by Professor Minor during the Fall '08 term at LSU.

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Test 1 - Chapter 1 Introduction to Life on Earth I. What...

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