Enzymes
Structures
Steps in DNA Replication
Leading, Lagging, or Both or neither?
Difficult
100
This is the enzyme that "unzips the genes"
What is helicase?
100
This is the word for the shape of DNA
What is a double-helix?
100
Step 1
What is helicase unzips the genes, forms a replication fork
100
Copies from the 5' to the 3' end
What is the leading strand
100
The name of the area where DNA begins to replicate/copy/divide
What is the replication fork?
200
This is the enzyme that adds new nucleotide bases to the parent or template strand to form a new DNA strand
What is DNA Polymerase III
200
The four nucleotide bases
What are Adenine, Thymine, Guanine, Cytosine?
200
Step 2
DNA polymerase adds complimentary bases from 5' to 3' end on leading strand
200
Uses Helicase, DNA Polymerase III & I, RNA primase, and DNA ligase
What is the lagging strand
200
The complimentary strand to a template DNA strand that reads "CAT TAC GCT"
What is "GTA ATG CGA"?
300
This is the enzyme that links all the bases on the lagging strand together
What is DNA Ligase?
300
The partnering of nucleotide bases on DNA ...
What is A=T, G=C
300
Step 3
RNA primase adds a primer to lagging strand
300

Copies in the 3' to the 5' direction

neither

300
A set of three nucleotide base pairs
What is a triplet?
400
The enzyme that replaces the RNA primers on the lagging strand?
What is Polymerase I
400
These are the fragments formed on the lagging strand by DNA Polymerase III.
What are Okazaki fragments?
400
Step 4
DNA polymerase III adds complimentary bases in the 5' to 3' direction, forming Okazaki fragments
400
Forms Okazaki fragments
What is the lagging strand
400
After helicase unzips the genes, these hold the template strands of DNA in place so that they do not wind back up.
What are single-stranded binding proteins?
500
This tells the DNA polymerase to begin adding new bases to the template LAGGING strand?
What is RNA primase?
500
The difference between RNA (ribonucleic acid) and DNA (DEOXYribonucleic acid)
What is an oxygen molecule?
500
Step 5
DNA ligase links Okazaki fragments. You end up with 2 strands "daughter" of DNA from 1 "parent" strand
500
Forms a new "daughter" strand of DNA by using the "parent" strand as a template
What is BOTH!
500
The name of the protein that DNA wraps itself around to form nucleosomes, which then form supercoils, which them forms chromosomes
What are histones?
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