Deck 12: Processing of RNA

Question 1

PolyA)polymerase .

A)adds the polyA)tail to prokaryotic mRNAs
B)generates short RNA molecules with repeating adenine residues used in regulation of transcription
C)adds the adenine cap to processed eukaryotic mRNAs
D)generates the 3' tail on eukaryotic mRNAs

Answer 1

D

Question 2

In bacteria,is involved in processing tRNAs.

A)ribonuclease P
B)ribonuclease H
C)ribonuclease D
D)ribonuclease E/F

Answer 2

A

Question 3

RNA processing includes .

A)base modification
B)intron removal and exon splicing
C)addition of extra bases
D)all of the above

Answer 3

D

Question 4

Some pre-rRNAs are processed to generate mature rRNA and tRNA.

Question 5

Multiple messenger RNAs can be generated from the same gene by selecting .

A)an alternative promoter when available
B)a different location for the addition of the polyA)tail
C)and splicing different exon cassettes
D)all of the above

Question 6

Which modified nucleotide base is part of the 5' cap on eukaryotic mRNAs?

A)cytosine
B)guanine
C)adenine
D)uracil

Question 7

Ribozymes are .

A)generated from proteins
B)RNA molecules with catalytic activities
C)proteins that degrade RNAs
D)protein complexes involved in RNA processing

Question 8

Self-splicing introns,ribosomes,and RNase P are examples of .

A)ribozymes
B)proteins
C)RNA processing enzymes
D)structural RNAs

Question 9

Primary transcripts are in the final form for translation into protein.

Question 10

The regions of transcript that contain protein coding sequence are called .

A)introns
B)exons
C)inteins
D)exteins