Bio quiz 13.4 – Flashcards
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miRNA regulates gene function at the _______ level.
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Translational.
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miRNA is generated from short hairpin loops of RNA by the action of?
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Dicer.
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Short RNA sequences that regulate gene expression by degrading gene transcripts are?
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miRNA.
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In eukaryotes, transcription factors attract RNA polymerase by binding to _______ sequences in DNA.
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Enhancer.
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The basic body structure of the fly in Figure 13-4 is determined by a cluster of?
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Hox genes.
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Hox genes top determine an animal's?
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Body plan.
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What regulates the expression of most eukaryotic genes?
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miRNA.
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Specialized cells regulate the expression of genes because they?
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Do not need the proteins that are specified by certain genes.
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Gene regulation in eukaryotes?
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Allows for cell specialization.
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Which of the following is involved in regulating gene expression in prokaryotes, but not in eukaryotes?
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Operon.
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Which is involved with the regulation of eukaryotic genes?
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TATA box. Hehe.
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When E. Coli is grown in glucose, and there is no lactose available?
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The lac repressor binds to the operator of the lac operon.
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A lac repressor turns OFF the expression of the lac genes by?
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Binding to the operator.
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In E. Coli, the lac operon controls the?
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Breakdown of lactose.
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Which of the following statements is true about gene regulation in prokaryotes?
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DNA-binding proteins determine whether a gene is expressed.
