Download Biology Name: Jacob Smith DNA: Interactive Simulation I: DNA

Biology
DNA: Interactive
Name: Jacob Smith
Simulation I: DNA Replication
Go to: http://www.pbs.org/wgbh/aso/tryit/dna/shockwave.html (Link #1 on Webpage)
Click: “DNA replication” (upper left) and then click “Unzip” Read the script and answer the questions below.
1. In a real cell, what does the DNA molecule do before it unzips?
The DNA unwinds from spools made of protein.
2. What molecules break the rungs (bases) apart?
Enzymes
Drag the correct bases over to “Synthesize” the new DNA halves. Read script, answer questions, and then
click “OK”.
3. How many base pairs are in the real human genome?
3 billion
Simulation II: DNA Replication
Go to: http://nobelprize.org/educational_games/medicine/dna_double_helix/ (Link #2 on Webpage)
● Click on “Play Game”; Click “Next” and reading each page, continue to click next until you come to the
game.; Click on organism #1 and match the base pairs as fast as you can! It is hard.
● Click “Next” and then click on each organism until you identify the one that belongs to chromosome #1;
Record the information in the chart below.
● Continue playing the game with the other two organisms, filling in the chart below.
How many
chromosomes?
How many base
pairs?
Chromosome
#
What is the
organism?
How many
genes?
5
125
25000
Thale cress
1
1
5
4300
e- coli
2
8
3
180
13500
fuit fly