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DNA Replication


This quiz is based on the process of DNA replication in both Prokaryotes and Eukaryotes.

Formats Info Page Worksheet / Test Paper Quiz Review
Multiple choice

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1.

The enzyme that accomplishes the unwinding of the original double stranded DNA molecule, once supercoiling has been eliminated, by breaking the hydrogen bonds that hold the two strands together is :

  Primase

  Topoisomerase

  Helicase

  DNA Polymerase II

  Half-n-half Clue
 

2.

The enzyme that creates a short RNA oligonucleotide at initiation sites where replication is to be carried out is called :

  Primase

  DNA Ligase

  DNA Gyrase

  Exonuclease

  Half-n-half Clue
 

3.

The enzyme that replaces the nucleotides of the RNA primer with the appropriate DNA nucleotides is :

  DNA Polymerase II

  RNA Polymerase

  DNA Ligase

  DNA Gyrase

  Half-n-half Clue
 

4.

What does transformation involve in Bacteria ?

  the infection of cells by a phage DNA molecule

  the creation of a strand of DNA from RNA

  the creation of a strand of RNA from DNA

  assimilation of external DNA into a cell

  Half-n-half Clue
 

5.

The enzyme X removes RNA primers attached by Primase and this gap is then filled in by DNA Polymerase I. The enzyme X is :

  RNase H

  DNA amylase

  DNA ligase

  Reverse Transcriptase

  Half-n-half Clue
 

6.

A mamalian cell typically has 1.2 meters (when completely outstretched) of double stranded DNA.The total time to duplicate the DNA is 5 hours. How many origins of replication are there if the rate of duplication is 16µmeters/min ?

  250

  15000

  1

  500

  Half-n-half Clue
 

7.

The end of a DNA strand that has a phosphate group attached to the number 5 carbon of its terminal deoxyribonucleotide is called :

  The 5 prime end (5')

  The 3 prime end (3')

  N-Terminus

  C-Terminus

  Half-n-half Clue
 


 
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