ch01_lecture - Invitation to Biology Chapter 1 Biology...

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Invitation to Biology Chapter 1
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Biology Scientific study of life Lays the foundation for asking basic questions about life and the natural world
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Why Study Biology? To learn how organisms are constructed, how they function, where they live, and what they do To help develop, modify, and refine ideas about life
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Life’s Underlying Unity Life’s organization extends from the molecular level to the biosphere Shared features at the molecular level are the basis of life’s unity
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Levels of Organization Cell Multicelled organism Population Community Ecosystem Biosphere
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Molecules of Life All things are made up of the same units of matter Living things are made up of a certain subset of molecules: Nucleic acids Proteins Carbohydrates Lipids
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DNA (deoxyribonucleic acid) Signature molecule of life Molecule of inheritance Directs assembly of proteins
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DNA and Inheritance Inheritance Acquisition of traits by way of transmission of DNA from parent to offspring Reproduction Mechanism by which an organism produces offspring Governed by instructions in DNA
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Nothing Lives without Energy Energy = capacity to do work Metabolism = reactions by which cells acquire and use energy to grow, survive, and reproduce
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Interdependencies among Organisms Producers Make their own food Consumers Depend on energy stored in tissues of producers Decomposers Break down remains and wastes
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Usually starts with energy from the sun
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This note was uploaded on 03/12/2011 for the course BIO 1002 taught by Professor Bush during the Fall '08 term at University of Minnesota Morris.

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ch01_lecture - Invitation to Biology Chapter 1 Biology...

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