Replication enzymes
The enzyme that unwinds the double helix
Helicase
Cells must copy their DNA before they do what?
Cell division
In eukaryotes, where are the copies of DNA made?
Nucleus
What are the 2 directions of the DNA strands called?
5' to 3' and 3' to 5'
The two scientists that first published the double helix structure of DNA.
Watson and Crick
What is the name of the enzyme used to build DNA molecules
DNA polymerase
In what direction is the new strand created
Adenine - Thymine
Cytosine - Guanine
The enzyme that has proof reading abilities
DNA polymerase
The scientist who used X-ray crystallography to image DNA's structure
Rosalind Franklin
The enzyme that can attach to a single stranded DNA and match complementary RNA nucleotides
Primase
The strand of DNA that is made continuously
leading strand
What is the complementary DNA strand of CGTATG?
GCATAC
What are the subunits making up DNA
Nucleotides
The scientist who originally identified the Transformation Principle
Griffith
What is the name of the enzyme that goes back through and seals the broken strands back together?
Ligase
The strand of DNA made discontinously
lagging strand
What type of molecule is put down by the enzyme primase?
RNA
What type of bonds join base pairs on DNA?
Hydrogen Bonds
These scientists used radioactively labelled viruses (bacteriophages) to identify whether proteins or DNA was the hereditary material.
Hershey and Chase
The enzyme that prevents DNA strands from supercoiling
topoisomerase
Where do new DNA strands grow from?
Replication Fork
The short segments of the lagging strand are called what?
Okazaki fragments
What direction can DNA polymerase copy in?
5' to 3'
Kary Mullis created this process to artificially replicate sections of DNA from tiny samples.
PCR