properties of life
TRANSCRIPT
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Advanced Biology
Properties of Life
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Biology
The scientific study of life
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Properties of Life
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Organization of Life
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Organization of Life
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Three Major Themes
Cell Theory Energy Transfer Evolution
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Cell Theory
Cells are highly ordered
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Cell Theory
Cell structures have specific functions
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Cell Theory
Cells carry out chemical reactions (metabolize)
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Cell Theory
Cells use metabolism to: Reproduce (with heredity) Regulate Communicate Move Grow
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Where do cells get the energy?
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Energy Transfer
Cells use energy Cells gather energy through
transformation
Light Food
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Evolution
Where did life come from?
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Evolution
Three hypotheses on the origin of life Creation Extraterrestrial Chemical Evolution
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Creation
The idea that life originated as the creation of a supreme being
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Extraterrestrial
Based on: Presence of basic molecules of life found in
Meteorites Comets Mars
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Chemical Evolution
Cells arose from the assembly of simple organic molecules present in the Earth’s primitive oceans about 3.7 billion years ago
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Heredity in reproduction
All living things contain coded information in the form of:
DNA This allows for both continuity and
change in living things
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Scientific Method
Discovery Science Based on observation Usually qualitative
Experimental Science Based on experimentation (testing a hypothesis)
Usually quantitative
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