DNA/RNA Structure
USE YOUR BOOK AND NOTES TO ANSWER THE FOLLOWING QUESTIONS:
DNA: The Molecule of Heredity
1. A nucleotide is made of three parts: a ___________________ group, a five carbon
__________________, and a nitrogen containing _____________________
2. In a single strand of DNA, the phosphate group binds to the __________________
of the next group.
3. The 5' end of a single DNA strand contains a free __________________, while the 3'
end contains a free __________________________.
4. Chromosomes consist of what two substances: ____________________ &
______________________
5. Purines have _________ rings, and pyrimidines have ____________ ring.
6. Chargaff's rule states that the DNA of any species contains equal amounts of
__________________ & ____________ and also equal amounts of
__________________ & ____________________
7. James Watson and Francis Crick determined that the shape of the DNA molecule was
a _________________ __________________
8. In DNA, thymine is complementary to ________________ ; cytosine is
complementary to _____________.
9. In a strand of DNA, the percentage of thymine is 30 %. What is the percentage of
cytosine in the same DNA strand? _________________
10. What enzyme synthesizes the new DNA strand? _______________________
11. DNA polymerase only travels in the ________ to _________ direction.
12. On the diagram:
Label the 3' and 5' ends.
Circle a nucleotide.
Label the sugar and phosphate.
Label the bases that are not already labeled
13. The two sides of the DNA helix are held together by ________________________
14. Write out the complete name for DNA:
__________________________________________
PART I. PROTEIN SYNTHESIS (1/2 of the test)
1. Go through the following tutorial:
http://www.biology.iupui.edu/biocourses/n100/2k3ch13dogma.ht
ml
THEN...
2. Go to the following link, complete the worksheet/coloring sheet
on transcription and translation, print it out and turn it in:
http://www.biologycorner.com/worksheets/trans_coloring.html
3. FINALLY...
Complete the following problem:
Go to the following link and do #’s 1-4 and 7-10 on page 2 of the pdf file.
Use the codon chart on page 4.
http://madisonschools.k12.mi.us/LinkClick.aspx?link=Cauley%2Fcodon+cha
rt.pdf&tabid=2715&mid=8608
BE SURE TO REVIEW ALL FORMER OBJECTIVES AND NOTES BEFORE
TAKING THE TEST AGAIN. YOU WILL NEVER IMPROVE YOUR TEST
SCORE UNLESS YOU WORK ON THE PARTS OF THE TEST YOU HAD A
DIFFICULT TIME WITH.