AP_chapter_39_closed_notes

AP_chapter_39_closed_notes - Chapter39Notes ExternalSignals...

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Chapter 39 Notes Plant Responses to Internal and  External Signals
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Concept 39.1
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Concept 39.1
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Concept 39.1 Messages are sent by hormones through  a signal-transduction pathway - a hormone binds to a specific receptor  on the cell wall - the binding stimulates the production  of a secondary messenger - the secondary messenger trigger's the  cell’s response to the original signal
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Concept 39.1
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Concept 39.1
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Concept 39.2 _____________ : chemical signals that  coordinate the parts of an organism - compound that is produced by one  part of the body and is transported to  other parts to bind to receptors in order  to trigger responses
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Concept 39.2 _____________ : any growth response  that results in curvatures of whole plant  organs toward or away from stimuli _____________ : the growth of a shoot  toward light - directs growing seedlings so  photosynthesis can occur
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Concept 39.2 - the tip of the seeding is enclosed in a 
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