Protein Synthesis-Interactive Tutorial
Name ______________________
Protein Synthesis-Interactive Tutorial
Answer the following questions as you work through the tutorial at:
Overview:
1. What are the two stages of the Central Dogma?
2. What happens during transcription?
3. What happens during translation?
Basics:
4. Complete the chart:
Differences in protein synthesis between prokaryotes and eukaryotes
|Event |Location in Prokaryotes |Location in Eukaryotes |
|Transcription | | |
|Translation of membrane or secreted | | |
|proteins | | |
|Translation of other proteins | | |
5. This tutorial will focus on which type of cell?
6. Three bases are referred to as _________________
7. What are anticodons? Draw a sketch to illustrate.
8. What codon does translation always begin with? Which amino acid does this represent?
9. In what direction is the code read?
10. What does the stop codon do? What are the three stop codons?
11. The genetic code is degenerate. What does this mean?
12. Copy the given mRNA sequence and translate the code below.
13. Copy the given point mutation and what would happen if a single point mutation occurred as shown below?
14. What does it mean to have a gene expressed?
Players:
15. Describe two differences between eukaryotic and prokaryotic mRNA.
16. Describe the structure of the tRNA molecule. Incluse the following terms:
anticodon, complimentary mRNA codons amino acid, covalent bond
Include a sketch
17. What is the third major player in protein synthesis?
18. What are ribosomes composed of?
19. Which anticodon is the correct match for the mRNA triplet shown below?
mRNA : AGU
Big Picture:
20. mRNA is the template, what is the first thing that it must tell the rRNA?
21. What is responsible for the attachment of the first section of the ribosome to the mRNA?
22. What is the P site?
23. What is the A site?
24. What role does GTP play?
25. What happens after the IF (initiation factor) has been removed?
26. What is the first step of elongation?
27. The second step in elongation is the formation of what kind of bond between the amino acids? Which enzyme catalyzes the reaction?
28. The whole ribosome is then shifted down one codon. What is on the P site and what is on the A site? What happens to the empty tRNA?
29. Fully explain what happens when the ribosome comes to the stop codon UGA.
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