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DNA Replication


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

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Multiple choice

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1.

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
 

2.

A major difference between DNA replication in prokaryotes and eukaryotes is :

  replication is conservative in prokaryotes

  DNA amylase performs the function of DNA helicase in prokaryotes

  prokaryotes do not use Topoisomerase in the replication process

  there is only one replication origin in prokaryotes.

  Half-n-half Clue
 

3.

A repeating DNA sequence at the end of chromosomes that prevents them from losing base pair sequences at their ends and from fusing together is called :

  A Telomere

  A Telomerase

  A replicon

  None of the above.

  Half-n-half Clue
 

4.

The enzyme (made of proteins and RNA) that elongates chromosomes by adding TTAGGG sequences to the end of existing chromosomes is :

  Telomerase

  Exonuclease

  Endonuclease

  Amylase

  Half-n-half Clue
 

5.

Because DNA polymerase III can only act from 5' to 3', continuous strand growth can be achieved only along one of the template strands (Leading strand) and strand growth along the other strand must occur discontinuously resulting in the production of a series of short sections of new DNA called :

  Replicon fragments

  Okazaki fragments

  Klenow fragments

  None of the above

  Half-n-half Clue
 

6.

DNA Polymerase III is actually an aggregate of several different protein subunits. So it is often called a :

  Holoenzyme

  Primeosome

  replisome

  None of the above

  Half-n-half Clue
 

7.

What does transformation involve in Bacteria ?

  the creation of a strand of DNA from RNA

  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

  Half-n-half Clue
 


 
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