Show:
Enzymes
Structures
Contributors
Leading, Lagging, or Both?
Grab Bag
100
This is the enzyme that "unzips the genes"
What is helicase?
100

What is the shape of DNA

double-helix

100

 determined a molecular structure of DNA based on all its known features - the double helix

Watson & Crick

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

Explain Hershey and Chase Experiment

where the phage DNA went when it exited the protein coat and entered the bacteria. The researchers allowed radioactive phosphorus-labeled phages to attach to bacterial cell membranes in a liquid solution and infect the bacteria.

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

How many bases are needed for one amino acid?

3

300

Meselson and Stahl Experiment

What did they find?

300
Copies in the 3' to the 5' direction
What is the lagging strand?
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

Is DNA replication semiconservative/conservartive/dispersive and please draw the correct answer

Semiconservative

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

How are the 5' to 3' and 3' to 5' marked? Draw the diagram.

start from the oxygen and count the carbon

500

Explain the whole process of Meselson and Stahl Experiment

Meselson and Stahl Experiment

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?