(e) tRNA. The answer is tRNA because we know that tRNA splicing occurs by endonucleoytic cleavage and ligation.
QUESTION 15 What type of splicing occurs by precise endonucleolytic cleavage and ligation? a) SRNA b)...
QUESTION 13 Which type of splicing occurs by autocatalytic splicing? a) rRNA b) miRNA c) TRNA d) mRNA e) SRNA
Which of the following can be translated into protein? A. rRNA B. tRNA C. mRNA D. miRNA E. B and C
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...
Which of the mechanisms involving siRNA- and miRNA-based gene regulation is INCORRECT? Select one: a. Cleavage of mRNA b. Inhibition of translation c. Post-translational modification d. Degradation of mRNA e. Transcriptional silencing
1. A loss of 3′ polyadenylation will lead to: a. intensified splicing of mRNA. b. intensified capping. c. decreased stability of the mRNA. d. intensified splicing of tRNA. e. alternative splicing. 2. What is the function of helicase? a. It eliminates supercoils by cleaving DNA. b. It utilizes the energy of ATP to add negative supercoils to DNA. c. It removes mismatched nucleotides from the 3′ end of DNA. d. It utilizes the energy of ATP for separation of strands....
Question 4) Trans-splicing is a special form of RNA splicing that occurs in 70-80% of all genes in the soil nematode C. elegans. In trans-splicing, the exons from two different primary RNA transcripts produced in different portions of the genome are joined end-to-end and ligated. Do you consider these trans-spliced sequences of real genes or are they instead the product of a fusion of two genes? Question 5) Recently researchers discovered a new class of mRNA regulators named miRNAs. miRNAs...
Question 4) Trans-splicing is a special form of RNA splicing that occurs in 70-80% of all genes in the soil nematode C. elegans. In trans-splicing, the exons from two different primary RNA transcripts produced in different portions of the genome are joined end-to-end and ligated. Do you consider these trans-spliced sequences of real genes or are they instead the product of a fusion of two genes? Question 5) Recently researchers discovered a new class of mRNA regulators named miRNAs. miRNAs...
QUESTION 1 Which of the following statements regarding splicing is FALSE? A) The length of introns determines the efficiency of splicing. B) Many human neurological disorders are caused by splicing errors and/or mutations in splicing factors. C) Splicing requires the action of a variety of snRNAs that direct the transesterification reactions. D) Splicing is dictated by sequence features in pre-mRNA transcripts QUESTION 2 Which of the following mRNA processing factors does NOT associate with...
QUESTION 15 RNA modification involves: O A. splicing B. 3' poly A tailing O C. 5' capping O D. all of the above QUESTION 16 What is the contribution or purpose of 5' capping? o It helps the mRNA exit the nucleus. o promotes efficient splicing. o It helps in the initiation of translation o all of the above QUESTION 17 What is translation? O process of making RNA O process of making DNA O process of making protein O...
Need help with biochemistry please 3. RNA splicing. Eukaryotic mRNAs are frequently spliced before they are translated. Algae have the smallest known intron. The sequence of the algal pre-mRNA before splicing occurs is shown below. exon 1 intron exon 2 5-AUGGAAAUUAAGUACUAUAUUGAAUUUCAGGUUGAAGAUUUAGGAAUGG-3' A) What is the sequence of the mature mRNA after splicing occurs? 5'- -3' B) What is the sequence of the polypeptide after translation occurs? (N-terminus) (C-terminus) C) Identify the type of mutation in the following mutant pre-mRNAs. [In...