Download Part 1 – Examining DNA Replication

Name: ______________________________ Pd._______
Part 1 – Examining DNA Replication
Academic Biology
DNA WebQuest Activity
1.
Navigate to the website http://www.pbs.org/wgbh/aso/tryit/dna/index.html# and read the
introduction provided. Then click on the link at the top of the page that reads “Go directly
to DNA Workshop Activity”.
2. Click on the button that says “DNA Replication”.
3. Follow the directions to carry out the activity.
4. When you are finished, draw your final DNA molecule in the space below:
5.
Use your notes, the link below, and the web (research if you need to!) to answer the
questions below. http://science.howstuffworks.com/life/cellular-microscopic/dna3.htm
a.
Why must a cell replicate its DNA?
b. How many strands of DNA does the cell have after replication?
c.
Where in a eukaryotic cell does replication occur?
d. What needs to happen to the DNA strand before replication can occur?
e.
What enzyme carries out this process?
f.
How does the DNA polymerase know what base to add to the new DNA molecule?
(which bases pair with one another?)
Part 2 – Examining Protein Synthesis
1.
Navigate back to the website http://www.pbs.org/wgbh/aso/tryit/dna/index.html# and
click on the link at the top of the page that reads “Go directly to the DNA Workshop
Activity”.
2. Click on the button that says “Protein Synthesis”.
3. Follow the instructions to carry out the activity.
4. Draw you final polypeptide chain in the space below:
5.
Answer the questions below using your notes, this website below, or the web (research!)
http://faculty.clintoncc.suny.edu/faculty/michael.gregory/files/bio%20101/bio%20101%20l
ectures/Gene%20Expression/gene%20expression.htm
a. DNA _____________> mRNA ______________> protein
b. How many bases in mRNA code for one amino acid?
c.
How many strands is DNA?
d. How many strands is mRNA?
e.
What is transcription?
f.
What enzyme carries out transcription?(creating RNA)
g.
How does the RNA polymerase know what nucleotides to use to build the mRNA?
(Which bases pair with one another?)
h.
Where does transcription occur in the cell?
i.
What is translation?
j.
On which organelle does translation occur?
k.
Where in the cell does translation happen?
l.
What type of RNA brings the amino acid to the ribosome?
m. How does the tRNA know what amino acid to bring?
n.
What is made by translation?