Lecture 8 - Unit 2 How do Natural Systems Work Lecture 8...

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Unit 2 How do Natural Systems Work? Lecture’8’ The’Role’of’Muta1ons’
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A"er this class and the associated reading you should be able to explain: How biological systems are organized Proper6es of all living things Determine the amino acid sequence of a protein, given a DNA sequence Muta6ons and their role in gene6c varia6on
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How’do’I’know’that’you’are’ alive?’ Or What’makes’a’living’ organism’diferent’From’ non-living’maCer?’
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Life’is’organized’ All living organisms share a set of quali;es that combined set them apart from the non-living world: Organisms’grow’&’develop’ Organisms’reproduce’ Organisms’require’energy’ Organisms’must’maintain’an’internal’constancy’(homeostasis)’ Organisms’adapt’ Organisms’react’to’their’environment’
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Life is organized in orders of increasing complexity: The’basic’unit’of’living’organisms’is’the’cell’ levels’of’biological’organiza1on’are’hierarchical’from’organic’molecules’–’ organelles’-’cells’–’1ssues’–’organs’-’organisms’
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Organisms grow by selec;vely absorbing or by manufacturing organic molecules that make up their physical structure.
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Lecture 8 - Unit 2 How do Natural Systems Work Lecture 8...

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