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Bio- Chap 11
Gene Expression
| Question | Answer |
|---|---|
| activation genes | (blank) |
| enhancer | a region agjacent to a eukaryotic gene that must be activated if the gene is to be expressed |
| euchromatin | the uncoiled form of a chromatin |
| exon | coding region of a eukaryotic gene |
| gene expression | the transcription of DNA to RNA and then into proteins |
| genome | the complete genetic material contained in an individual |
| inducer | in the lac operon, the molecule that binds to repressor molecules and induces gene expression |
| intron | a section of a structural gene that does not code for an amino acid and is excised before translation |
| lac operon | DNA segment that codes for the regulatory enzymes for lactose metabolism in E. coli |
| operon | a unit of DNA common in bacteria and phages consisitng of clusters of regulated genes |
| pre-mRNA | a form of mRNA that contains introns and exons |
| regulator gene | a genetic unit that regulates or suppresses the activity of one or more structural genes |
| repression | the blockage of transcription by the action of a repressor protein |
| repressor protein | a protein that inhabits a specific gene form being expressed |
| strucural gene | genes that code for particular polypeptides |
| transcription factor | additional proteins that bind to to enhancers and RNA polymerase and regulate transcription |
Created by:
sng4fd
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