What is the first step in eukaryotic DNA replication?
The two strands of the double helix unzip forming replication forks.
100
An Austrian-American biochemist who discovered that the percentages of Adenine = Thymine and the percentages of Guanine = Cytosine in any sample of DNA.
Who is Edwin Chargaff?
100
What is the charge of DNA?
Negative
100
Does DNA replication take place in the same direction along both strands of DNA?
Since DNA is antiparallel, the leading strand is replicated differently than the lagging strand.
200
What are the three basic components that make up nucleotides?
deoxyribose, phosphate back bone and a nitrogenous base.
200
This enzyme makes it less likely that DNA will be lost from telomeres during replication
What is telomerase?
200
In the early 1950s this British scientist used a technique called X-ray diffraction to uncover clues about DNA structure.
Who is Rosalind Franklin?
200
What are purines?
Adenine and Guanine
200
What are pyrimidines?
Thymine and Cytosine
300
What are the four nitrogenous bases?
Adenine, Thymine, Guanine and Cytosine
300
Why are strands of DNA molecule said to be complementary?
Each strand of the DNA double helix has all the information needed to reconstruct the other half by the mechanism of base pairing.
300
These two scientists used work of Mrs. Rosalind Franklin to publish a one page paper detailing DNA structure as a double helix
Who is Watson and Crick?
300
What two qualities allow information to be transmitted from DNA?
Template DNA strands (allowing new strands to be created from the original) and unique base pairing.
300
This type of cell has its DNA stored in chromosomes
What is a eukaryotic cell?
400
These can be joined in any order
What are nucleotides?
400
This enzyme catalyzes the addition of nucleotides to a growing DNA strand.
What is DNA polymerase?
400
What are the two qualities that allow information to be copied from DNA?
Weak hydrogens bonds (allow DNA to be unzipped) and base pairing.
400
This type of cell has its DNA stored in plasmids
What is a prokaryotic cell?
500
What kind of bonds join nucleotides on a single stand of DNA?
Covalent bonds
500
A new strand of DNA is created from this original strand.
What is the template strand?
500
What allows genetic information to be stored in DNA?