Practice exam 2__31672 (key)

Practice exam 2__31672 (key) -...

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1. Which of the following is NOT a difference between RNA and DNA? -c a. Sugar – ribose vs. deoxyribose b. 2’-OH c. 3’-OH d. Base - Uracil vs. Thymines e. None of the above. Questions  2-7:  Following is a diagram of replication in process.  2. What is the name of the element labeled #23? - a a. Leading strand  b. Topoisomerase 23 25 26 24 3’ 5’ 27
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c. Okazaki fragment d. RNA primer e. Helicase 3. What is the name of the element labeled #24? - d a. Leading strand b. Topoisomerase c. Okazaki fragment d. RNA primer e. Helicase 4. What is the name of the element labeled #25? - c a. Leading strand b. Topoisomerase c. Okazaki fragment d. RNA primer e. Helicase 5. What is the name of the protein labeled #26? -e a. DNA polymerase I b. RNA primase c. Topoisomerase d. DNA polymerase III e. Helicase 6. What is the name of the protein labeled #27? -d a. DNA polymerase I b. RNA primase c. Topoisomerase d. DNA polymerase III e. Helicase 7. Which of the following is NOT TRUE regarding the processing of the 3’ end of RNA  transcripts? -e a. Is modified by the addition of 7-methyl guanosine cap. b. Is modified by the addition of a polyA tail. c. Has a polyadenylation signal; AAUAAA or AUUAAA, near the 3´ end of the transcript. d. Is modified by the splicing machinery. e. a and d
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Questions 8-11:  The mRNA sequence of a gene is shown below. Answer questions 8- 11 using this. Wild type:   5’  CCAGCAUAUGCCUAAUCGCAGUUCGGAAUAGCAAGCC  3’ 8. What is the sequence of the coding strand? -d a. 5’-CCAGCAUAUGCCUAAUCGCAGUUCGGAAUAGCAAGCC-3’ b. 3’-CCAGCATATGCCTAATCGCAGTTCGGAATAGCAAGCC-5’ c. 5’-GGTCGTATACGGATTAGCGTCAAGCCTTATCGTTCGG-3’ d. 5’-CCAGCATATGCCTAATCGCAGTTCGGAATAGCAAGCC-3’
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This note was uploaded on 08/16/2011 for the course BIOL 1361-1362 taught by Professor Any during the Spring '08 term at University of Houston.

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Practice exam 2__31672 (key) -...

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