DNA, RNA, and Proteins
1. Name the 3 parts of the nucleotide.
a.____________________________
b. ____________________________
c. _____________________________
2. Name the 4 nitrogen bases used in DNA. a. ___________________________
b.___________________________
c.___________________________
d.___________________________
3. Name the base used in RNA that is not used in DNA. ___________________
4. List 3 differences between DNA and RNA.
DNA
RNA
a) ___________________________
a)__________________________________
___________________________
__________________________________
b) ___________________________
b) __________________________________
___________________________
__________________________________
c) ___________________________
c) __________________________________
___________________________
__________________________________
5. Give one codon for each amino acid listed.
 Aspartic acid ________________
 Phenylalanine _______________
 Arginine ___________________
 Methionine _________________
 Cysteine ___________________
 Tryptophan _________________
 Isoleucine __________________
 Threonine __________________
 Lysine _____________________
 Tyrosine ___________________
 Leucine ____________________
 Valine_____________________
6. Which amino acid is the START signal for protein synthesis? _____________________
7. What are the CODONS that code for stop? _____________________________________
8. DNA is being REPLICATED! Write the complimentary DNA strand that is formed.
a. ACTGGA
b. CCGATG
c. TGAACG
d. GGAACT
a.___________
b. __________
c. __________
d.__________
9. DNA is being TRANSCRIBED! Write the complimentary RNA strand that is formed.
a. AGCTAACCT
b. GCCAATAGC
c. GAATCCCTT
a. ___________
b. ____________
c. ___________
10. Give the amino acid sequence for the following mRNA strand.
AUG UGC AAA CCU GCA UUU CAA UUG ACG UGA
___________________________________________________________
11. Write the mRNA codon sequence for the following protein. If there are multiple codons
for the amino acid, pick only one to write.
Methionine - luecine - proline – theronine – alanine – glycine – Stop
____________________________________________________________________________
Given the following DNA strand, write the mRNA strand sequence and then give the amino acid
sequence of the protein.
TAC CAT AAA TCG CTA CGG TTT ACT
mRNA ____________________________________________________
Amino
Acid ____________________________________________________
DNA (#
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mRNA
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tRNA
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Decoded: _____________________________________________________________________
Message