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Unformatted text preview: response • etiolated tissue-starved of tissue, very little chlorophyll, long stem [example of a signal transduction pathway] • hormones may alter gene expression, alter enzymatic activity, or alter membrane properties allowing things to cross membrane • shoots-negatively geotropic, roots-positively geotropic • auxin=IAA=indolacetic acid...
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This note was uploaded on 05/20/2010 for the course BIOL 101 taught by Professor Fevzidaldal during the Fall '08 term at UPenn.
- Fall '08