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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 :

  DNA Polymerase II

  Topoisomerase

  Helicase

  Primase

  Half-n-half Clue
 

2.

The enzyme that (during replication) proceeds along one of the strands of a DNA molecule adding deoxy-nucleotide-triphosphates to hydrogen bond with their appropriate complementary dNTP on the other single strand and to form a covalent phosphodiester bond with the previous nucleotide of the same strand is called :

  DNA Polymerase II

  DNA Polymerase I

  Primase

  DNA Polymerase III

  Half-n-half Clue
 

3.

An enzyme that recognizes and cuts DNA only at a particular sequence of nucleotides is often called :

  Restriction endonuclease

  RNA polymerase

  Photolyase

  DNA glycosylase

  Half-n-half Clue
 

4.

What does transformation involve in Bacteria ?

  assimilation of external DNA into a cell

  the infection of cells by a phage DNA molecule

  the creation of a strand of RNA from DNA

  the creation of a strand of DNA from RNA

  Half-n-half Clue
 

5.

The enzyme that stitches Okazaki fragments together (along the lagging strand) is called :

  DNA Ligase

  Holoenzyme

  Topoisomerase

  DNA Polymerase II

  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 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
 


 
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