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Transcription (RNA Synthesis)


This quiz is based on the process of Transcription (RNA synthesis).

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Multiple choice

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1.

A guanine triphosphate nucleotide that binds to the 5' end of the mRNA thus increasing the stability of the synthesized RNA and enhancing translation efficiency is called a :

  poly-A-tail

  trailer

  leader

  Cap

  Half-n-half Clue
 

2.

The bacterial promotor sequence usually found at the -10 position (ten base pairs upstream of the transcription start site) is :

  TAGACA

  TATTAT

  TTGACA

  TATAAT

  Half-n-half Clue
 

3.

An RNA molecule that can catalyze either its own cleavage (self-splicing) or the cleavage of other RNA molecules is :

  A chaperone enzyme.

  An inducer

  A ribozyme

  A spliceosome

  Half-n-half Clue
 

4.

A segment of DNA that includes regions preceding and following the coding DNA ( introns as well as exons ) is called :

  transposon

  operon

  retroposon

  cistron

  Half-n-half Clue
 

5.

Sections of DNA within a gene that do not encode part of the protein that the gene produces are called :

  Exons

  intein

  Introns

  Transposons

  Half-n-half Clue
 

6.

A RNA transcript (whose base sequence is complementary to that of the mRNA of a gene) that can inhibit the expression of a gene by forming a duplex with the mRNA strand is called :

  antisense RNA

  tRNA

  dsRNA

  rRNA

  Half-n-half Clue
 

7.

Due to the presence of Introns and Exons, in Eukaryotes the splicing process of pre-mRNA can lead to different ripe mRNA molecules and therefore to different proteins. This phenomenon is called :

  alternative splicing

  intronic splicing

  exonic splicing

  gene splicing

  Half-n-half Clue
 


 
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