Which of the following is true of the process of eukaryotic mRNA degradation? Select all that apply.

The 5' cap is removed.

The exosome degrades the mRNA to individual nucleotides.

Degradation can be at least partially carried out in processing bodies.

The poly(A) tail is lengthened.

answer

watching

150

views

For unlimited access to Homework Help, a Homework+ subscription is required.

You have 0 free answers left.
Get unlimited access to 3.8 million step-by-step answers.

Already have an account? Log in

Irving HeathcoteLv2

2 Nov 2018

Unlock all answers

Get 1 free homework help answer.

Already have an account? Log in

Which of the following eukaryotic RNA processing events does not occur in the nucleus? Select all that apply.

Match the following:

1	Region which lies upstream of thetranslation start site contains the Shine Dalgarno sequence
2	Sequence added to the 3' end of thepre-mRNA which affects mRNA stability
3	Establishes the reading frame andspecifies the first amino acid of the protein chain
4	DNA sequence that the transcriptionapparatus recognizes and binds to initiate transcription
5	Expressed sequences of DNA that arenot removed during alternative splicing
6	Signals the end of translation andthe protein molecule
7	Group of three nucleotides that codefor an amino acid
8	Site begins the coding region of thegene and is located 25-30 nucleotides downstream of the TATAbox
9	Non-coding sequences of DNA thatintervene within coding regions of a gene
	10 Ribosome binding site ineukaryotes; functions in the initiation of translation and mRNAstability
11	A sequence which lies downstream ofthe coding region of the gene; determines the location of the 3'cleavage site in the pre-mRNA molecule
12	Sequence of nucleotides at the 3' endof the mRNA that is not translated into protein; affects thetranslation and stability of the mRNA molecule

A.	5' untranslated region
B.	AAUAAA consensus sequence
C.	Promoter
D.	Transcription start site
E.	3' untranslated region
F.	Introns
G.	Initiation codon (AUG)
H.	Poly(A) tail
I.	5' cap
J.	Termination codon (UAA, UGA, UAG)
K.	Exons
L.	Sense codon

A.	Binding of snRNPs, addition of a poly A tail, splicing of introns
B.	Binding of snRNPs, transporting, synthesizing of ribose
C.	Capping, transporting, synthesizing of ribose
D.	Binding of snRNPs, capping, splicing
E.	Capping, splicing, addition of a poly A tail

	A. prokaryotic transcription occurs in the cytoplasm, while eukaryotic transcription occurs in the nucleus
	B. eukaryotic transcription is carried out by 1 RNA polymerase, while prokaryotic transcription is carried out by 3 different RNA polymerases
	C. eukaryotic transcripts are processed, while prokaryotic transcripts are translated while transcription is still occurring
	D. prokaryotes have sigma factors for specificity of binding whereas eukaryotes have multiple general transcription factors
	E. prokaryotes have to worry about unpackaging the DNA for transcription, while eukaryotes have almost naked DNA not bound up by nucleosome