Biol 212 Worksheet:
Nucleic Acids
Supplemental Instruction
Iowa State University
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Date:
Greg
Biology 212 (2)
Kukday
9/3/2015
1. REVIEW: Briefly distinguish between the four levels of protein structure.
2. What is a nucleotide? What is it composed of?
3. What is the difference between a pyrimidine and a purine? Draw an example of each.
4. What are the two types of nucleic acids? Discuss their differences and functions.
5. What bond is formed to link two nucleotides together? What is this reaction called?
6. What does it mean if DNA is “directional”? Which direction is DNA written?
7. Describe DNA’s levels of structure. Which bases pair together? What about in RNA?
8. What 3 elements are in carbohydrates? What is the generic formula for a carbohydrate?
9. What are the building blocks of carbohydrates? What makes these blocks unique?
10. What bond is formed to link two simple sugars together? Give an example of a
disaccharide.
11. Give 3 examples of complex carbohydrates.
12. TEST QUESTION: Which of the following bonds is correctly paired with its
macromolecule?
a. Peptide Bond – Proteins
b. Glycosidic Linkage – Nucleic Acids
c. Phosphodiester bond – Carbohydrates
c. Peptide Bond – Nucleic Acids
13. TEST QUESTION: Which of the following is not a difference between DNA and RNA?
a. RNA is single stranded; DNA is double stranded
b. DNA contains Thymine; RNA contains Uracil
c. DNA contains an extra hydroxyl group that RNA does not have
d. DNA is much less reactive than RNA
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