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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 G-C-rich stretch of nucleotides, followed by an A-T-rich stretch of nucleotides is the signal for :

  Rho independent termination

  transcription

  Initiation

  Rho dependent termination

  Half-n-half Clue
 

2.

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
 

3.

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 :

  leader

  Cap

  poly-A-tail

  trailer

  Half-n-half Clue
 

4.

Genes that are expressed at all times and under all conditions of growth are called :

  regulatable genes

  chimeric genes

  constitutive genes

  antibody genes

  Half-n-half Clue
 

5.

The process by which messenger RNA is synthesized by complementary base pairing of ribonucleotides with deoxyribonucleotides to match a section of DNA (a gene) is called :

  Translation

  Replication

  Transcription

  I have no idea ! !

  Half-n-half Clue
 

6.

A collection of genes including one which acts as a switch that governs the expression of the structural genes in the collection is called :

  An Operon

  lac operon

  A regulon

  Does everything have to have a name ? ? ! !

  Half-n-half Clue
 

7.

The switch of an operon is turned on if specific substance is not bound to the operator. This substance is called :

  a repressor

  a promoter

  an operon

  an activator

  Half-n-half Clue
 


 
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