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Protein Synthesis Review
1-3.
Summarize the codes for the following:
Replication
DNA to
A
G
4-5.
Name:
Transcription
DNA to
A
T
G
Translation
mRNA to
U
G
What would be the complementary DNA base pair sequences of the DNA sequence
listed below?
ACGTTTACGAAGCTAGCCGAT
TATACGCATCCGACGTACGAT
6-8.
There are some differences between DNA and RNA. List 3 of them below
9. What is the process of “rewriting” DNA into mRNA code called?
10. Transcribe the following DNA sequence into mRNA code
DNA: T A C A T G A C G A T A C A G T G T T A C G T T C C T A A T G G A A T C
mRNA:__________________________________________________________
11. Now draw lines between each group of 3 nucleotides (these groups are called codons)
you just transcribed above. Ex: UAG/UGC/…
12-17. Look at the amino acid translation chart (in your notes). Find which amino acid
each codon from above is coding for.
a.
e.
i.
b.
f.
j.
c.
g.
k.
d.
h.
l.
18. A large amount of amino acid monomers combine to form what polymer
(macromolecule)?
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19. Transcribe the following DNA sequence into mRNA:
TACAGTCGGTCGAAGTCGATGGTTTCGGCTCGAATC
20. Now draw lines between each group of 3 nucleotides (these groups are called codons)
you just transcribed above. Ex: UAG/UGC/…
21-26. Look at the amino acid translation chart (in your notes). Find which amino acid
each codon from above is coding for.
e.
i.
a.
b.
c.
d.
f.
j.
g.
k.
h.
l.
27-32. Now, for each codon (in the mRNA sequence) write down the anticodon (tRNA).
For example, if the mRNA codon is AUU, then the anticodon is UAA
q.
u.
m.
r.
v.
o.
s.
w.
p.
t.
x.
n.
33-37. Label where you would find each of the following. If it’s both inside and outside
the nucleus, show an arrow coming out of the nucleus.
□ DNA
□ ribosomes
□ mRNA
□ tRNA
□ amino acids
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Translation WS Bio I
1. A codon is
2. Summarize the codes for changing mRNA into tRNA: List the bases found in mRNA,
then write the base pair for that letter in the tRNA box.
mRNA base
tRNA base
3. What is the process of translating mRNA into proteins called?
4. How many different amino acids are there?
5. Translation ends when a
codon is reached
6-10. Follow the steps below to change mRNA sequence into amino acids
A
mRNA: A U G /A U C G A U C C C G G G C G G G G C U U U C C U U A A



Draw lines between each group of 3 letters (these groups are called codons). Ex: UAG/UGC/…
Now put a letter above or below each codon, starting with A, B, C etc…
Look at the amino acid translation chart (in your notes). Find which amino acid each codon from
above is coding for and write them below.
A.
E.
I.
B.
F.
J.
C.
G.
D.
H.
11-15. Follow the steps below to change mRNA sequence into amino acids
mRNA: A U G A U U U U C C U A U G U U G G C G A G A C C A C U A A



K.
L.
Draw lines between each group of 3 letters (these groups are called codons). Ex: UAG/UGC/…
Now put a letter above or below each codon, starting with K, L, M etc…
Look at the amino acid translation chart (in your notes). Find which amino acid each codon from
above is coding for and write them below.
M.
N.
O.
P.
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Q.
R.
S.
T.
16-20. Follow the steps below to change mRNA sequence into amino acids
mRNA: A U G G A A G U G U A C G G U A G C U U U U C C U C G U A A



U.
V.
W.
X.
Draw lines between each group of 3 letters (these groups are called codons). Ex: UAG/UGC/…
Now put a letter above or below each codon, starting with U, V, W etc…
Look at the amino acid translation chart (in your notes). Find which amino acid each codon from
above is coding for and write them below.
Y.
Z.
AA.
BB.
CC.
DD.
_____
21. What are the building blocks of proteins?
22-24. What would be the complementary tRNA base pair sequences of the mRNA sequence
listed below?
A C G UUU A C G A A G C U A G C C G A U
UAUACGCAUCCGACGUACGAU
UAGGCUAUGUAUUUGCGGGAA
25. Transcription occurs in the ___________________, while translation occurs in the
__________________________.
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