4. which of the following is NOT required for splicing to occur in most mRNA?
a. 2 transesterification reactions
b. introns
c.formation of a lariat structure
d a branch-point G
d) a branch-point G is not required for splicing to occur in most mRNA.
Because in most mRNA splicing branch-point A is also used.
4. which of the following is NOT required for splicing to occur in most mRNA? a....
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 3 Which of the following statements about RNA splicing is false? Small RNA molecules in the nucleus participate in the splicing reactions necessary for the removal of introns. Splicing occurs after the cap has been added to the end of the mRNA Formation of the lariat intermediate is dependent on the 3' OH. Splicing can remove coding as well as non-coding sequence.
PLEASE ANSWER BOTH QUESTIONS CORRECTLY. THANK YOU!
PLEASE ANSWER BOTH QUESTIONS CORRECTLY. THANK YOU!
Which of the following modification on mRNA is required for promoter escaping of eukaryotic RNAP? Select one: a. Capping b. Phosphorylation c. Splicing d. PolyA tailing Arrange the following in the proper sequence in which they occur during RNA splicing. 1. Lariat is formed 2. U2 binds to branch site 3. 3' splice site is cut Select one: a. 1, 2, 3 b. 2, 1, 3...
For splicing or pre-mRNA, which snRNA molecules is needed for recognition of the 5' splice of the intron? A U1 B U2 C U5 D U4 For splicing or pre-mRNA, which snRNA molecule is needed for recognition of branching point A in the intron? A U4 B U2 C U1 D U5
Which of the following statements about splicing is false? A. a single gene can code for many types of protein due to alternative splicing B. The 5' and 3' regions of the intron are highly variable in sequence C. the spliceosome is found in the nucleus of the cell D. The mRNA is composed of exons; introns are spliced out
Which if the following is not part of RNA processing? Addition of a 5' cap Splicing out of introns Pairing of the codon and anticodon Addition of a poly-A tail 2.An mRNA molecule that contains the genetic information to translate only a single peptide is considered to be...
(7) Which of the following structures is type 1 cap attached to a eukaryotic mRNA? a. m''ppp Sex b. m'G'ppp SXmY C. m’sppp XmYmZ d. None of the above (8). What are cryptic splice sites? a. These are splice sites that are used in some cells, but not in others b. These are splice sites that are always used. c. These are sites that are involved in alternative splicing, resulting in the removal of exons from some mRNA molecules d....
11. In eukaryotes, primary mRNA transcripts are extensively processed, which include(s): A) modification of the 5' end. B) modification of the 3' end. C) removal of introns by splicing. D) None of the answer options are correct. E) modification of either end and removal of introns by splicing.
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 1 A segment of mature edited mRNA that correctly codes for a protein is as follows: 5-ACGUUCGCUUUAGCUAGCCA-3 . Match each of the pre-edited mRNA sequences with the correct editing mechanism. - 5'-ACGCGCAGCAGCCA-3' A. A-G conversion - 5'-AGUUGCUUUAGUAGA-3 B. C-U conversion - 5'-ACGCCCGCCCCAGCCAGCCA-3' C. C-Insertion - 5'-ACAUUCACUUUAGCUAACCA-3' D.U-Insertion QUESTION 2 3 po Match the term with its function. - - - A. Necessary for RNA export from the nucleus small nuclear RNA + protein complexes, involved in * intron removal...