Syvum Home Page

Home > Quiz Games > Biology > DNA Molecule >

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

Your Performance  

1.

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
 

2.

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 :

  Topoisomerase

  Helicase

  DNA Polymerase II

  Primase

  Half-n-half Clue
 

3.

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 III

  Primase

  DNA Polymerase I

  DNA Polymerase II

  Half-n-half Clue
 

4.

The enzyme responsible for initiating the unwinding of double-stranded DNA (eliminating supercoiling) by nicking a single strand of the DNA molecule is :

  Topoisomerase

  Helicase

  Gyrase

  Ligase

  Half-n-half Clue
 

5.

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
 

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.

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
 


 
5 more pages in Molecular Biology


Contact Info © 1999-2019 Syvum Technologies Inc. Privacy Policy Disclaimer and Copyright
Previous
-
Next
-