Answere : All the above given options are correct. So, option E is correct.
Explanation : Poly A tail is a sequence of 100 to 200 adenines which present at 3' end of mature mRNA. It has several functions such as -
-facilitatingThe export of mRNA to the cytoplasm
-protectingmRNA from enzymes(exonucleases)
-helping ribosomes(translation) attach to the 5' end etc.
(5 pts) The primary function of the poly A tail is which of the following? To...
QUESTION 2 Match the term with its function B. - 5'cap E poly-A tail D. SnRNP A self-splicing intron B. Guides mRNA to ribosomes and protects it from exonuclease activity C. Structure in which introns are spliced out of hn RNA D. small nuclear RNA-protein complexes, involved in intron removal E. Necessary for RNA export from the nucleus A spliceosome C. group I intron
In Eukaryotes, mRNA is supplemented with a sequence of adenine nucleotides (poly A tail) at one end and methylated guanine nucleotides at the 5’ end (cap). This is occurs A. Just before transcription. B. Just after transcription, in the nucleus. C. Just after transcription, in the cytoplasm. D. Just before translation in the cytoplasm.
Not sure where I am going
wrong.
Each type of pre-mRNA processing has one or more important functions. Match the function with the appropriate type of processing XAddition of 5' cap Addition of poly(A) tail RNA splicing enables movement of mRNA out of the nucleus increases mRNA stability through addition of many non-DNA-templated nucleotides facilitates binding of ribosome to beginning of mRNA involves cleavage of RNA downstream of AAUAAA consensus sequence removes non-coding regions from pre-mRNA increases mRNA stability through...
1. During the process of translating a protein into the lumen of the rough ER, the signal recognition particle (SRP) binds to both the signal sequence and the signal peptidase. the signal sequence and the SRP receptor. the start codon and the small ribosomal subunit. the start codon and the SRP receptor. 2. Each of the following modification processes takes place in the nucleus of a eukaryotic cell EXCEPT addition of a 5’ cap. addition of a poly-A tail. mRNA...
22. What are the roles of Dicer and RISC in the function of miRNAs? Dicer RISC 23. Describe the concepts of primary, secondary, tertiary and quaternary protein structure 24. Here is a short sequence of codons. AUG CAU UGU UUU Write out the amino acids this sequence of codons encodes. Now add an insertion mutation of your choosing in the first codon and write out the new mutant sequence. What are the first four amino acids encoded by this mutant...
What is the function of the 3' poly-A sequence in eukaryotic mRNA? Select one: O a. Intron splicing signal. O b. Initial attachment site for ribosomes. O c. Translation termination. O d. Protection from cytosolic enzymes. What is the function of the 5' cap in eukaryotic mRNA? Select one: O a. Polyadenylation of the 5' end of the mRNA. b. Intron splicing signal. O c. It must be on the mRNA in order for the mature mRNA to be exported...
Which of the following is not an essential function of ribosomes in all domains of life? A. Catalyze peptide bond formation between amino acids during polypeptide formation. B. Bind messenger RNA and identify the start codon where translation begins. C. Facilitate the complementary base pairing of mRNA codons and tRNA anticodons that determines amino acid order in the polypeptide. D. Align the Shine Delgarno sequence in the mRNA with a complementary sequence in the 16S rRNA of the small ribosomal...
choose the right answer : 1- what is degradation of ' unwanted' proteins in eukaryotic cells A- polyribosomes B- proteasomes C- editosome D- spliceosomes 2- addition or deletion of bases causes which kind of mutation A- transition B- transcription C- transversion D- frameshift mutation 3- point mutation involve : A- change in single base pair B- deletion C- duplication D- insertion 4- what is the complementary m-RNA sequence for the DNA sequence C-A-A-G-G-T A- C-A-A-G-G-U B- G-U-U-C-C-A C- C-A-A-G-G-T D-...
Can someone help explain #32 for me please
31. Which macromolecule is going to contain more subunits linked together (i.e, monomers together), hemoglobin RNA or hemoglobin protein? A)) Hemoglobin RNA linked Hemoglobin protein C) More information is necessary in order to make a conclusion. 32. You decide you are going to decipher codons of an unknown mRNA transcript. In a test tube, you mix the unknown mRNA template, all of the tRNAs for all 20 amino acids, and a large...
1) Which of the following is FALSE about RNA polymerase?It does NOT require a primer to begin synthesis It synthesizes RNA 5’ to 3’ It catalyzes the formation of phosphodiester bonds It only transcribes one of the two DNA strands for any particular gene It only transcribes exons 2)Which of the following is not synthesized from, or does not use DNA as a template? Introns Poly A tail Ribosomal binding site Primase RNA polymerase 3) Which of the following is...