Question

11. What are does "RNP" stand for and what are two functions of these molecules" 12. Deadenylation can lead to _of unneeded/unused mRNA. Select one: "amplification", "degradation", "splicing" 13. What are two modifications that occur in "pre-tRNA" to become "mature tRNA" 14. microRNAs play a key role in which of the following? a. translational repression b. viral RNA degradation Explain: c. RNA interference d. all of the above Explain: 15. Synthesis of pre-rRNA occurs in the a. nucleolus. b. endoplasmic reticulum. c. extranucleolar area of the nucleus. d. cytosol.

Answer 1

11) RNA stands for ribonucleoprotein . These proteins helps in RNA spilicing , regulations of the RNP . These proteins play an important role in DNA replication.

12)deadenylation lead to the degradation of unused/ unneeded RNA.

13) two modifications involve in tRNA processing are cleavage and base modifications . Cleavage involve two enzymes RNAseD ( 3' end ) and RNAse P( 5'end). Addition of CCA sequence at the 3'end.

14 c) RNA interference ( involve in RNA regulation in eukaryotes)

15 a) nucleolus ( site for rRNA synthesis and assembly).