Quiz 12 - scarce a the regulator gene b the promoter c the...

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1.____ inhibit transcription by blocking the binding of positively acting transcription factors to DNA. a. Repressors b. Activators c. lysines d. Distal elements 2. The “control elements” involved in eukaryote gene regulation are a. transcription factors b. CAP proteins c. operator sites d. short DNA segments 3. If a newly discovered operon encodes enzymes for synthesis of essential amino acids it most likely is regulated like the: a. trp operon. b. lac operon. 4. The product of the operon mentioned above would act as: a. an inducer. b. a co-repressor. 5. A group of distal control elements is collectively called: a. specific transcription factors. b. a promoter site. c. an enhancer site. d. a proteosome. 6. To what region of the lac operon does the repressor protein bind when lactose is
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Unformatted text preview: scarce? a. the regulator gene b. the promoter c. the operator d. the enhancer 7. Which of the following is key to mRNA degradation? a. mRNA length b. miRNA c. general transcription factors d. specific transcription factors e. repressible enzymes True (“a”)/ False (“b”) 8. Histones bind tightly to DNA because DNA has an overall positive charge and the lysines of histones have a negative charge. 9. The most common form of gene expression control in both prokaryotes and eukaryotes is transcriptional control . 10. Coordinate regulation means that genes with the same control elements are activated by the same signals. QUIZ 12 [11-30-07] KEY: 1a, 2d, 3a, 4b, 5c, 6c, 7b, 8b, 9a, 10a...
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