Question

Please help with 1-16!!! (two pictures are attached) Thanks!

Transcription . Although both prokaryotes and eukaryotes put a cap and a tail on the mRNA, only eukaryotes have introns that have to be spliced out. (T/F) 2. The poly A tail on cukaryotic mRNA protects the RNA from rapid degradation in the cytoplasm. (T/F) 3. The polyA tail is added to eukaryotic mRNA immediatel after transport of the message from the nucleus. (T/F) 4. is usually a single stranded molecule. 5. contains cytosine. a. DNA only b. RNA only c. Both DNA and RNA d. Neither DNA nor R a. DNA only b. a. DNA only b. RNA only c. Both DNA and RNA RNA only d. Neither DNA nor RNA c. Both DNA and RNA 6. contains uracil. d. Neither DNA nor RNA Which of the following statements is true about bacterial promoters? a. they contain consensus sequences centered around the -10 and -35 nucleotides b. they serve as the binding site for RNA polymerase c. the are transcribed into the mRNA where they serve as the binding site for ribosmes d. a and b are both correct e. a, b and c are all correct 7. ides Bacterial transcription termination regions on the DNA will be marked by a. a large number of uracils b. a GC rich region followed by a long run of adenines 8. c. the formation of a stem loop structure d. 4 sequential stop codons Following RNA synthesis, snRNP is responsible for as part of the formation of the 9. mature message b. attachment of the polyA tail e. a, b and c are all correct c. removal of introns a. attachment of the 5'cap d. a and b are both correct

Answer 1

Transcription . Although both prokaryotes and eukaryotes put a cap and a tail on the mRNA, only eukaryotes have introns that have to be spliced out. (T/F) TRUE 2. The poly A tail an cukagyotic mRNA protects the RNA from rapid degradation cytoplasm. (T/F TRUE yA tail is added ip eukaryotic mRNA immediately after transport of the message the nucleus. (TEI) FALSE 4. is usually a single stranded molecule. A only c. Both DNA and RNA d. Neither DNA nor RNA RNA onlyBoth DNA and RNA d. Neither DNA nor RNA only RNA only c. Both DNA and RNA d. Neither DNA nor RNA 5. contains cytosine. a. DNA only b. only 6. contains uracil. a. DNA Which of the following statements is true about bacterial promoters? a. they contain consensus sequences centered around the -10 and -35 nucleotides . they serve as the binding site for RNA polymerase C, the are transcribed into the mRNA where they serve as the binding site for ribosmes d. a and b are both correct e. a, b and c are all correct 7. Bacterial transcription termination regions on the DNA will be marked by the formation of a stem loop structure d. 4 sequential stop codons Following RNA synthesis, snRNP is responsible for as part of the formation of the 8. a. a large number of uracils b. a GC rich region followed by a long run of adenines 9. mature message b. attachment of the polyA tail e. a, b and c are all correct removal of introns a. attachment of the 5'cap d. a and b are both correct

10. When DNA is transcribed, the RNA produced is called the sense strand. (T/ TRUE Which of the following is true of BOTH DNA and RNA a. usually double stranded use adenine as one of the building blocks c. has three phosphate groups between cach sugar in the backbone of t d. there is no hydroxyl group on the 2' carbon of the ribose sugar he molecule In prokaryotes, RNA polymerase initially binds to the promoter, a group of 12. nucleotides recognizable by having two centered around the nucleotides at the -l positions upstream from the start site. 35 consensus sequences c. GC-rich sequences b. Shine-Delgarno sequences d. Marconi sequences 13. During transcription, the In order to effeetively transeribe a given gene, RNA polymerase must transcribe bot A mRNA must have removed before it can be transported from the nucleus. binds at -35, assisting the core polymerase to bind at-10. a. anticore polymerase b. R protein sigma factor d. missing link 14. strands of the DNA. (T/l FALSE 15. a. exons b. pentons introns d. splicons Before leaving the nucleus, mRNA must have a cap of 7-methyl gaunosine placed on 16. the 5" end and a tail of_ placed on the 3' end. d. mFNS adenines b. gaunines c. miscellancous nucleotides