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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.

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
 

2.

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
 

3.

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

  Holoenzyme

  DNA Polymerase II

  DNA Ligase

  Topoisomerase

  Half-n-half Clue
 

4.

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
 

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.

In 1940, Nobel Laureate Barbara McClintock discovered sequences of DNA that can move around to different positions within the genome of a single cell and cause mutations. These sequences (first observed in maize) are called :

  Transposons

  inverted repeats

  direct repeats

  sticky ends

  Half-n-half Clue
 

7.

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

  DNA amylase performs the function of DNA helicase in prokaryotes

  prokaryotes do not use Topoisomerase in the replication process

  replication is conservative in prokaryotes

  there is only one replication origin in prokaryotes.

  Half-n-half Clue
 


 
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