Download Nucleic acid worksheet

Name ____________________________
Date ____________________________
Nucleic Acids
1. ___________________ are the monomers of all nucleic acids.
2. These monomers of DNA contain the bases: __________________,
___________________, ________________________, and _____________________.
3. _________________________ is the sugar found in all DNA molecules.
4. The shape of a DNA molecules is called the __________________________.
5. _______________________ is the term used to refer to DNA when it makes an exact
duplicate of itself.
6. Give the base sequence of the complementary DNA strand.
Original strand : T T A C G G T C A C C A
-----------------Complementary strand :
7. Make a strand of mRNA from the above original DNA strand and place it on the line
below.
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8. What is a codon? _______________________________________________________
9. How many codons are found in the above m-RNA molecule? ____________.
10. What protein fragment would this mRNA code for ? ( write out the amino acids in
order). Use the chart of amino acids in your notes.
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_______________________________________________________________________
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11. List the 4 steps of DNA replication.
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12. What is the function of the m-RNA molecule?
_______________________________
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13. What is the function of the t-RNA molecule? ________________________________
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14. Where does protein synthesis take place in the cell? ___________________________
Answers:
1. nucleotides.
2. adenine, guanine, cytosine, and thymine
3. Deoxyribose
4. double helix
5. replication
6.-A A T G C C A G T G G T
7. U U A C G G U C A C C A
8. a sequence of three nucleotides that codes for one amino acid
9. 4
10. leucine, argenine, valine, proline
11. a). DNA unwinds, b). it unzipps, c). adds complementary bases, d). rewinds.
12. carries the code for one protein to the ribosome
13. to carry the appropriate amino acid to the ribosome.
14. cytoplasm on the ribosome.