資訊推薦

• 12. Which of the following factors recognizes the UAG, UAA, and UGA codons? (A) RNA polymerase (B) i
• 13. Which nucleic acid structure has its bases methylated after synthesis? (A) DNA (B) mRNA (C) tRNA
• 14. Which of the following is not required for both DNA replication and RNA transcription? (A) DNA (
• 15. Proximity-ligation assays are used to detect a specific (A) DNA. (B) RNA. (C) protein-protein in
• 16. Which method(s) can be used to functionally inactivate a gene without altering its sequence? (A)
• 17. Which of the following is not a mobile DNA element? (A) transposon (B) long terminal repeats (LT
• 18. Sorting of protein to mitochondria and chloroplasts is (A)co-translational. (B) post-translation
• 19. Open reading frame (ORF) analysis is not effective in identifying genes in higher eukaryotes bec
• 20. All of the following can be found in chromatin except (A) DNA. (B) histones. (C) RNA. (D) transc
• 21. Telomeres (A) consist of repetitive sequences with high G content. (B) are a few hundred base-pa
• 22. Which of the following sequential order for the secretory pathway is false? (A)Rough endoplasmic
• 23. Most eukaryotic genes are controlled at the level of (A) transcription initiation. (B) transcrip
• 24. An enhancer (A)is a protein that binds to RNA polymerase and stimulates transcription. (B) inter
• 25. Which of the following sequences functions as a promoter for transctiption? (A) TATA box. (B) in
• 26. Which of the following statements regarding RNA splicing is correct? (A) initiation of transcrip
• 27. Which of following events does not occur within the nucleus? (A) protein phosphorylation (B) RNA
• 28. Which of the following is not used in the electrophoretic mobility shift assay (EMSA)? (A) a rad
• 29. RNA editing is (A) post-transcriptional alteration of sequences in mRNAs. (B) pre-transcriptiona
• 30. Which of the following is most likely to lead to a loss of gene function? (A) A sequence change
• 31. A cDNA library differs from a genomic library in that (A) the cDNA was constructed from introns
• 32. Protein sorting of anterograde cargo to different destinations within the Golgi complex occurs i
• 33. The only cells that can correctly attach sugars to proteins to form glycoprotein products are (A
• 34. Which type of RNA participates in nuclear export of mRNA? (A) snRNA (B) miRNA (C)tRNA (D) hnRNA
• 35. Synthesis of pre-rRNA occurs in the (A) cytoplasm. (B) endoplasmic reticulum. (C) extranucleolar
• 36. Steroid hormones activate transcription by (A) binding to a nuclear receptor. (B) phosphorylatin