Lec1 - The Characteristics of Life Living things exchange...

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The Characteristics of Life ± Living things exchange energy and materials with the environment. ± Living things sense and respond to stimuli. ± Living things reproduce and grow. ± Living things consist of one or more cells ± Living things maintain homeostasis. ± Living things evolve. How am I different from a wax figure? Wax Museum, SF
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Exchange energy and materials with the environment Flow of Energy and Cycling of Materials
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Sense and respond to stimuli
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Maintain homeostasis Homeostasis – ‘staying the same’ – ability to compensate for internal or external changes , maintain overall internal state of physical and chemical stability
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Reproduce and grow Instruction in DNA, the genetic material
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Consist of one or more cells ?
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Evolve Evolution: change in time Charles Darwin: theory of evolution by means of natural selection. Evolution by natural selection is based on: 1) more offspring are produced than can survive, 2) traits vary among individuals, leading to differential rates of survival and reproduction, and 3) trait differences are heritable. When members of a population die they are replaced by the progeny of parents that were better
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This note was uploaded on 03/12/2012 for the course NPB 10 taught by Professor Moglinger during the Spring '12 term at UC Davis.

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Lec1 - The Characteristics of Life Living things exchange...

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