GENERAL GENETICS (BIOL 2510) WINTER QUARTER 2018 EXAM #4 (100 points) 35. Which
ID: 211137 • Letter: G
Question
GENERAL GENETICS (BIOL 2510) WINTER QUARTER 2018 EXAM #4 (100 points) 35. Which of the following RNA molecules never associates with an MRNA a RNA c sARNA d. miRNA e. All of these RNA molecules can associate with an mRNA 36. In a series of experiments in the star nosed mole, you have identified a novel processed form, is about 22 ma le edes n length. Further study show-that it- endogenous gene by RNA polymerase II as a relatively distinct stem loop structure. This RISC Once associated with the RISC it binds to target mRNAs and without degrading the mRNA Based on the information provided, the RNA you ldentified is most kely a long transcript (-200 nucleotides) hat forms a a. RNA b. snRNA e miRNA d SIRNA 37, which of the following sequences make up the largest portion of a eukaryotic pr,mRNA? t introns g. exons i. outtrons j. none of the above 38. How many introns are present on a gene that consists of 4 exons? Assume that all introns are spliced out of the mature mRNA during processing. DRAW THIS OUT IF YOU NEED TO a. 2 b. 3 C.4 d. 5 e. The number cannot be determined from the information provided. 39. An in vitro (in the test tube) transcription system that contains a eukaryotic gene does not initiate transcription. What is one possible problem with the reaction? a. There is a mutation at -10, where the promoter Pribnow box sequence (CGGC) is located. b. There is a mutation in the inverted repeat sequence that prevents a hairpin secondary structure from forming in the 3 UTR. c. TATA-binding protein (TBP) has not been added. d. Rho factor has not been added e. Sigma factor has not been added. 40. Translation is terminated when one synonymous terminator tRNA recognize one of three stop codons. a. True b. FalseExplanation / Answer
Answer for question number 35 : The correct option is E (All of these molecules can associate with mRNA)
Answer for question number 36 : The correct option is c (microRNA) : microRNAs are involved in the regulation of gene expression which is accomplished by binding to the target mRNA resulting in translation repression.
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