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Cards In This Set
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The process of turning on a gene to produce RNA and protein.
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Gene expression
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What is the primary method to control what type and how much of each protein is expressed in a prokaryotic cell?
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The regulation of DNA transcription
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When RNA is synthensized in eukaryotic cells, it is transported out of the nucleus to where?
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The cytoplasm
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When does regulation of gene expression occur in eukaryotes?
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At all stages of the process (epigenetic, post-transcriptional, translational, and post-translational)
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Occurs when DNA is uncoiled and loosened from nucleosomes to bind transcription factors.
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Epigenetic level
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Occurs when RNA is processed and exported to the cytoplasm after it is transcribed.
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Post-transcriptional level
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Stage that occurs after protein has been made.
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Post translational level
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Post-translational control refers to...
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Regulation of gene expression after translation
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In a prokaryotic cell, regulation of gene expression begins at what level?
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Transcriptional
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A collection of genes involved in a pathway that are transcribed together as a single mRNA in prokaryotic cells.
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Operons
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What are the three types of regulatory molecules that can affect the expression of operons?
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Repressors, activators, and inducers
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Proteins that suppress transcription of a gene in response to an external stimulus.
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Repressors
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Proteins that increase the transcription of a gene in response to an external stimulus.
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Activators
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Small molecules that either activate or repress transcription depending on the needs of the cell and the avaliability of substrate.
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Inducers
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A series of genes necessary to synthensize tryptophan in prokaryotic cells.
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Trp operon
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