Bio 1500 Due date: see Canvas assignment
Worksheet: Protein Synthesis 2 & 3
Fill out this worksheet after you watch the recorded lectures on Translation and on the Genetic Code. Save the
worksheet on your computer for later reference. Then go to the Canvas quiz/survey and enter your answers
there for homework points.
A. Panopto Lecture Protein Synthesis Part 2: translation
1. Describe the steps of translation. What structures are required? How do they interact to make a polypeptide?
A- Ribosome binds to the bases 3 at a time. B- Transfer RNA brings the correct AAs to the ribosomes.
- Match, then the tRNA will break off to find another buddy and eventually forms the
poly peptide.
2. What is the role of the tRNA molecules?
- tRNA are built up of nucleotieds.
- Each tRNA carries ONE type of AA depending on it's anti-codon.
- tRNA whose anti-codon binds complementarily to the codon brings it's AA to the ribosome.
3. If a particular tRNA molecule has an anticodon GGA, what codon would be complementary to it?
Codon= CCU
4. Why is this stage of protein synthesis called ‘translation?’ What is being translated? What is it being
translated into?
It translates the message it recieves from mRNA on how much to make of what. Then they leave the pores and
go to the ribosomes where they attatch.
B. Panopto Lecture Protein Synthesis Part 3: the genetic code
1. Explain what the genetic code is. Name at least one misconception about the genetic code.
- System for translating information.
^ the correspondence between particular mRNA codons and amino acids
- MISCONCEPTION: The code is not the symbols used or what it translated into. Genetic code- It is the system
used to translate codons to amino acids.
2. Looking at the table of the genetic code in the video, which of the three bases in each codon is the 'least
significant.' In other words, which one could change and have the least likelihood of changing the resulting
amino acid? Or is there no difference among the three bases?
- Least significant: T
