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Unformatted text preview: 11-20-09 Quiz 12
a. more b. less 1. Euchromatin is _____ acetylated than heterochromatin. 2. The ____ properties of the R groups in lysine and arginine account for DNA/histone interactions. a. polar b. non-polar c. basic d. acidic 3. An example of an epigenetic factor would be a ___. a. point mutation c. methylated DNA d. regulatory gene e. co-repressor b. operon 4. Assuming an operon has only three genes, it will also include ___ operator site(s), ___ start codon(s), and ___ stop codon(s). a. 1,1,1 b. 1,3,3 c. 3,3,1 d. 3,3,3 e. 1,3,1 5. An “enhancer” is a __ : a. set of distal control elements on eukaryote DNA. b. set of proximal control elements on prokaryote DNA. c. transcription factor. 6. A repressor molecule “represses” operon transcription by binding directly to the ___. a. operator site b. gene c. RNA polymerase d. start codon 7. A “catabolic” operon is usually ___ until turned ___. 8. An “anabolic” operon is usually ___ until turned ___. a. off; on a. off; on b. on; off b. on; off True (a) or False (b): 9. One common control point for gene regulation in all organisms is at the point of RNA processing. 10. A frameshift mutation will result from a 3 base-pair insertion in a gene. Key: 1a, 2c, 3c, 4b, 5a, 6a, 7a, 8b, 9b, 10b ...
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- Fall '09