7. Gene transcription starts at a and ends at a a. start codon, terminator d. en

Question

7. Gene transcription starts at a and ends at a a. start codon, terminator d. enhancer, silencer b. start codon, stop codon e. promoter, terminator c. promoter, stop codon 8. In prokaryotes, the function of the Shine-Delgarno sequence is to: a. enhance RNA stability d. trigger mRNA degradation b. allow DNA unwinding e. promote ribosome binding c. recognize sigma factor 9. The function of the consensus sequence (AAUAAA) located near the 3' end of a pre-mRNA is to promote which event(s)? a. RNA cleavage d. a and b only b. addition of the Poly-A tail e. a, b, and c c. transcriptional termination 10. The requirements for normal pre-mRNA splicing are a. 5' splice site in the intron c. branch point adenosine in the intron b. 3' splice site in the intron d. spliceosome complex in the nucleus e. all of these choices 11. Which RNA processing event(s) use a guide RNA to modify sequences after transcription? c. RNA editing a. alternative splicing d. RNA interference b. RNA methylation e. adding the Poly-A tail Page 1 of

Explanation / Answer

7] Option [b] start codon, stop codon

8] Option [e] promote ribosome binding

The Shine-Dalgarno Sequence is a ribosomal binding site.It helps to recruit the ribosome to the messenger RNA to initiate protein synthesis by aligning the ribosome with the start codon.

9] Option [c] transcriptional termination

10] Option [a] 5' splice site in the intron

Splicing of a pre-mRNA molecule occurs in several steps that are catalyzed by small nuclear ribonucleoproteins which bind to the 5' splice site in the intron.

11] Option [ c] RNA editing

They guide the insertion or deletion of uridine residues. They are also used in DNA editing in the case of Cas9.

Related Questions

Navigate

• Browse (All)
• Browse 7
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.