BCH 403: Exam 6 Questions with Complete Solutions
In E. coli, 5S rRNA is cleaved out of the pre-rRNA operon by: a. RNase III b. RNase E Correct Answer-RNase E The 5' cap: a. Does not play a role in translation b. Interacts with the poly A tail during transport out of the nucleus c. Protects the mRNA from 5' exonucleases d. Is acetylated e. Is sometimes found on E. coli mRNA Correct Answer-Protects the mRNA from 5' exonucleases The addition of the poly A tail: a. Occurs during the elongation phase of transcription b. Occurs during the elongation phase of translation c. Occurs before transcriptional termination d. Is coupled to transcription termination e. Affects the protein sequence encoded in the mRNA Correct Answer-Is coupled to transcription termination Alternative splicing: a. Is found in prokaryotes and eukaryotes b. only requires the spliceosome c. requires the spliceosomes and additional components that block splicing sites d. is only found within the liver e. Results in proteins being translated that catalyze different chemical reactions Correct Answer-requires the spliceosomes and additional components that block splicing sites
Document information
- Uploaded on
- May 22, 2024
- Number of pages
- 7
- Written in
- 2023/2024
- Type
- Exam (elaborations)
- Contains
- Questions & answers
