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12 Cards in this Set
- Front
- Back
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6 levels of gene regulation |
Alteration of structure, transcription, mRNA processing, RNA stability, translation, post translational modification |
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Prokaryote most control exhibited at |
Transcription level |
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Eukaryotes most influence at |
Transcription |
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3 types of genes |
Structural genes, regulatory genes, constitutive genes |
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What do structural genes do |
Code for proteins that function in metabolism or cell structure |
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What do regulatory genes do |
Code for proteins that control expression of structural genes at transcription level |
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What do constitutive genes do |
Code for essential functions |
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Define operon |
Transcription unit that includes structural genes, a promoter, and an operator |
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Why do operon code for more than one substrate |
If you need multiple substrates to regulate a different gene, having all substrates on the same operon allows you to make the right amount of each substrate when you need it |
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Are the multiple genes on an operon separate or on one mRNA |
They are pokycistronic, all on one |
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Where is the operator located |
Just behind the promoter |
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What must each gene in pokycistronic genes contain |
Shine dalgarno sequences and start and stop codons |
