Biology
NAME: ___________________________________________
Ch. 12- DNA & RNA
PERIOD: __________________
DATE: _____________________
Protein Synthesis:
Protein Synthesis Webquest

1st molecule
STEP 1:

2nd molecule
3rd molecule
STEP2:
Part 1 : Biotechnology Transcription
Follow the step-by-step instructions in the interactive and answer the questions as you go!
Website: http://www.biotechnologyonline.gov.au/popups/int_transcription.html
1. Genes are always made into
, which make up the entire human body.
2. Click on the cell. Where does transcription happen?
3. Click on the nucleus.
a. What is the structure of DNA?
b. The DNA is labeled as dsDNA. Knowing what you know about the structure of DNA, what
do you think “ds” stands for?
4. Click on the DNA molecule. What is transcription?
5. What does the protein keratin do?
6. Which enzyme (molecule) builds/synthesizes the complementary RNA strand?
7. What are the differences in bases between DNA & RNA? Build the complementary RNA strand
8. RNA nucleotides bind to their complementary bases of the DNA template until the entire gene is
copied. What is the new RNA molecule called?
9. What happens to the template DNA molecule after the mRNA molecule is completed?
10. What happens to the mRNA molecule after it is completed?
Part Two: Biotechnology Translation
Website: http://www.biotechnologyonline.gov.au/popups/int_translation.html
11. Translation converts
into
.
12. What do ribosomes do?
13. As the ribosome reads the mRNA, it build (or convert) a
.
14. What does the order of nucleotides determine?
15. What does the order of amino acids determine?
16. Describe how a ribosome reads an mRNA molecule.
17. What is a codon?
Part Three: Biotechnology Protein Synthesis
Website: http://www.biotechnologyonline.gov.au/popups/int_prosynth.html
18. Protein synthesis occurs in the
.
19. What does tRNA do?
20. The RNA, which is made up of three nucleotides that are complementary to the codons on mRNA
and is found on tRNA is called
.
21. The bond formed between two amino acids is called
.
22. The ribosome stops adding amino acids when encounters a(n)
.
Part Four: Learn.Genetics Transcribe and Translate a Gene
Website: http://learn.genetics.utah.edu/content/molecules/transcribe/
Using what you just learned, practice making a protein here!
What is the amino acid sequence of the protein that you made?
Get a signature from Ms. Nguyen before you are done!