Download Review: Protein Synthesis

Name: __________________________ Class: ____________________ Date: _____________
Review: Protein Synthesis
Anatomy
Label each of the following structures or processes.
Structures
B. ________________________
C. ________________________
D. ________________________
E. ________________________
Processes
A. _______________________
F. _______________________
Written by James Dauray
http://www.aurumscience.com
Page 1
Physiology
Answer each of the following questions:
1. What is the first step of protein synthesis called?
a. What is the second step of protein synthesis called?
2. Where does the first step of protein synthesis occur?
a. Where does the second step of protein synthesis occur?
3. When a molecule of RNA is assembled from a DNA template, a specific set of bases is used. List
the base used in the RNA molecule based on the ones present in DNA.
a. Adenine (A) –
b. Thymine (T) –
c. Guanine (G) –
d. Cytosine (C) –
4. Nitrogen bases are read by the ribosome ____ bases at a time.
5. Sets of three bases on the mRNA strand are called ____________.
a. Corresponding sets of three bases on tRNA molecules are called ________________.
6. What is the start codon?
7. What are the three stop codons?
8. A bunch of amino acids put together makes ____________.
9. Explain the role of each enzyme in protein synthesis:
a. DNA Helicase –
b. RNA Polymerase –
10. The genetic code is described as redundant and non-ambiguous. Explain what these mean.
Use your codon chart to determine the amino acid sequence. Remember to read through the strand and
ONLY start on AUG and STOP when it tells you to stop. Follow example below:
Example:
DNA  AGA CGG TAC CTC CGG TGG GTG CTT GTC TGT ATC CTT CTC AGT ATC
mRNA  UCU GCC AUG GAG GCC ACC CAC GAA CAG ACA UAG GAA GAG UCA UAG
protein 
start - glu – ala –thre – hist – asp -glu-threo-stop
acid
1.
acid
DNA  CCT CTT TAC ACA CGG AGG GTA CGC TAT TCT ATG ATT ACA CGG TTG CGA TCC ATA ATC
mRNA 
protein 
2. DNA  AGA ACA TAA TAC CTC TTA ACA CTC TAA AGA CCA GCA CTC CGA TGA ACT GGA GCA
mRNA 
protein 
3. DNA  TAC CTT GGG GAA TAT ACA CGC TGG CTT CGA TGA ATC CGT ACG GTA CTC GCC ATC
mRNA 
protein 
4. DNA  TAA ACT CGG TAC CTA GCT TAG ATC TAA TTA CCC ATC
mRNA 
protein 
5. DNA  CTA TTA CGA TAC TAG AGC GAA TAG AAA CTT ATC ATC
mRNA 
protein 