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which of the following is a function of a poly-a tail in mrna?

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1.which of the following is a function of a poly-a tail in mrna?

Which of the following is a function of a poly-A tail in mRNA? A.It is a sequence that codes for the binding of RNA polymerase to the DNA. B.It helps protect the mRNA from degradation by hydrolytic enzymes. C.It indicates the site of translational termination. D.It adds the modified guanine to the 3′ end of the mRNA.

2.which of the following is a function of a poly-a tail in mrna?

Which of the following is a function of a poly-A tail in mRNA? Select one or more: It adds the modified guanine to the 3′ end of the mRNA. It indicates the site of translational termination. It is a sequence that codes for the binding of RNA polymerase to the DNA. It helps protect the mRNA from degradation by nucleases. It reduces enzyme activity.

3.which of the following is a function of a poly-a tail in mrna?

Polyadenylation is the addition of a poly(A) tail to a messenger RNA.The poly(A) tail consists of multiple adenosine monophosphates; in other words, it is a stretch of RNA that has only adenine bases. In eukaryotes, polyadenylation is part of the process that produces mature messenger RNA (mRNA) for translation.In many bacteria, the poly(A) tail promotes degradation of the mRNA.

4.which of the following is a function of a poly-a tail in mrna?

Answer: C. Prokaryotic poly-A tails have other functions, because prokaryotes don’t have nuclei. Explanation: In eukaryotes, the poly-A tails help in import of mRNA from cytosol to nucleus with the help of proteins named as importins and then export of mRNA from nucleus to cytosol with the help of proteins named as exportins.In prokaryotes they serve the function of mRNA degradation instead.

5.which of the following is a function of a poly-a tail in mrna?

The poly A tail comprises of a long stretch of adenine nucleotide. It helps with the stability of the messenger RNA (mRNA) as well as preventing the degradation of mRNA by enzymes in the cytoplasm. After elongation, the poly A tail is usually attached to the 3′ end of a pre- mRNA.

6.which of the following is a function of a poly-a tail in mrna?

Which of the following is a function of a poly-A tail in mRNA? A. It adds the modified guanine to the 3′ end of the mRNA. B. It is a sequence that codes for the binding of RNA polymerase to the DNA. C. It helps protect the mRNA from degradation by hydrolytic enzymes. D. It indicates the site of translational termination.

7.which of the following is a function of a poly-a tail in mrna?

The poly-A tail is a long chain of adenine nucleotides (A) that is added to the 3′ end of mRNA molecules during RNA processing. Poly-A tails increase the stability of the mRNA molecules. Answer …

8.which of the following is a function of a poly-a tail in mrna?

Which of the following statements is incorrect about the function of polyA tail of eukaryoticmRNA? (a) PolyA-polymerase adds adenine nucleotides at the 3′ end of mRNA. (b) A long polyA tail facilitatesmRNAexport from the nucleus. (c) A long polyA tail promotes mRNA stability. (d) A long PolyA tail promotes degradation of mRNA.

9.which of the following is a function of a poly-a tail in mrna?

between the cap at the 5′ terminus of an mRNA and the poly(A) tail. To directly assess the effect of the cap on poly(A) tail function, Luc mRNA constructs were syn- thesized in vitro as four different species: uncapped poly{A)-, uncapped poly(A) +, capped poly(A)-, and capped poly(A) + mRNA.

10.which of the following is a function of a poly-a tail in mrna?

The main focus of this chapter is to highlight the significance of mRNA that is purified by affinity chromatographic selection directed toward the poly (A) tail. The purpose of purifying mRNA, i.e., removing the rRNA and tRNA species, is to increase the statistical representation of the mRNAs in a sample as a function of the total mass of purified RNA.

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Published Date: 2020-10-22T00:00:00.0000000Z

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1  mRNA 5 prime cap and poly-A tail
mRNA production and processing aspects of Transcription
Watch Video: https://www.youtube.com/watch?v=DoSRu15VtdM
2  mRNA Modification: Tailing, Capping and Splicing
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Wikipedia based search results

1.Gene expression

form poly(A) tail, which protects the RNA from degradation. The poly(A) tail is bound by multiple poly(A)-binding proteins (PABPs) necessary for mRNA export…

2.Post-transcriptional modification

Processing of core histones is done differently because typical histone mRNA lacks several features of other eukaryotic mRNAs, such as poly(A) tail and introns…

3.Transcription (biology)

Transcription is the first of several steps of DNA based gene expression in which a particular segment of DNA is copied into RNA (especially mRNA) by the enzyme…

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