DNA and Protein Synthesis Online Activity
To get to the website and activity, follow the directions below:
1. Go to the textbook website: http://my.hrw.com
2. Enter your username and password.
3. Select “Go to the interactive online edition”
4. Select “Chapter 13 DNA, RNA and proteins”
5. Hit “Go”
6. Select the “eActivities” tab
7. Select “DNA, RNA and gene expression” from the Virtual
investigation at the bottom right of the screen.
Follow through the investigation, answering the following questions
as you go. To continue from one step to the next, hit the “forward”
button.
1. During replication, a double helix of DNA is copied to produce
what?
2. During replication, how do bases pair?
a. A pairs with _______
b. C pairs with _______
c. T pairs with _______
d. G pairs with _______
3. During transcription, the information in a specific region of DNA
is transferred to ____________.
4. During transcription, how do the bases pair?
a. A pairs with _______
b. C pairs with _______
c. T pairs with _______
d. G pairs with _______
5. Translation occurs when transfer RNA molecules read the
information on the mRNA molecule and string together a series
of amino acids to form a _______________.
6. The mRNA codon UCU pairs with the anticodon __________
on tRNA.
7. Label the following on the picture below:
tRNA
anticodon
mRNA
peptide bond
codon
amino acid
8. On the diagram below, what bases pair with the DNA
sequence on the right to make mRNA? Write the bases in
alongside the DNA molecule.
9. Along the bottom is an mRNA molecule. Above it, list the
bases on the tRNA anticodons that would pair with each codon
on the mRNA.
10.
Once in a while, a mistake happens during replication
and it creates a change in the DNA. This is called a
______________.
11.
What letters change in someone with Sickle Cell
Anemia?
12.
What happens to the red blood cells in someone with
Sickle Cell Anemia?
13.
Label the following on the picture below:
Nucleus
mRNA
anticodon
ribosome
tRNA
amino acid
DNA
codon
peptide bond