6. Where in the cell does replication occur? __________________________________
7. Click the protein synthesis button.
8. Where does protein synthesis occur? ____________________________________
9. Match the base in the correct position.
10. What nitrogen base is replaced in RNA? __________________________________
11. What is the name of the base that replaces it? ____________________________
12. Write the new base pairs for the RNA molecule.
_______________________ and _______________________
_______________________ and _______________________
13. Where does transcription occur? ____________________________________
14. What is a mRNA molecule? ____________________________________________
15. What is the triplicate code carried by mRNA called? _________________________
16. What is the triplicate code carried by tRNA called? _________________________
17. Where does translation occur? _________________________________________
18. What anticodon corresponds to the codon AUG? ____________________________
19. What amino acid is placed first in the sequence? ___________________________
20. What cell part constructs proteins? _____________________________________
21. What type of chain forms as the amino acids are linked together? ______________
Part II. Replication
1. Go back to the DNA Workshop homepage.
2. Scroll down the screen and click on replication.
3. Answer the questions below using the information from the article.
4. What does DNA stand for? ____________________________________________
5. What parts of DNA form the sides of the ladder or the backbone?
6. What forms the rungs or steps of the ladder? ______________________________
7. Name the three components of a nucleotide. ________________________________
_________________________________________________________________
8. Where are nucleotides found in the cell? __________________________________
9. What determines the genetic code? _____________________________________
10. What is the first step of protein synthesis? ________________________________
11. How often are mistakes made during replication? ____________________________
Part III. All Wound Up
1. Click on all wound up at the bottom of the page.
2. What does a strand of DNA form? ______________________________________
Part IV. Protein Synthesis
1. Click on Protein Synthesis at the bottom of the page.
2. What is DNA’s main purpose? __________________________________________
3. What do proteins do in the cell? ________________________________________
4. What is the purpose of protein synthesis? _________________________________
5. What is a polypeptide? ________________________________________________
6. What protein makes hair? _____________________________________________
Part IV. Summary
1. What are the two steps of protein synthesis?
Step #1 _______________________________________
Step #2 _______________________________________
Step #1: Transcription, which occurs in the nucleus of the cell.
Step #2: Translation, which occurs in the cytoplasm at the ribosomes.
Step #1: Transcription
Step #2: Translation