Download study guide for proteins an nucleic acids

Name __________________________ Chapter 2 ‐‐Proteins and Nucleic Acids Study Guide
Page 52 Proteins
1. Different proteins have different functions. What determines the function (job) of a protein?
2. Read carefully the last paragraph on page 52. What is the relationship between amino acids,
polypeptides, and proteins?
3. What do all amino acids have in common? What makes each of the 20 amino acids
different from each other? Draw an amino acid and circle the R‐group.
4. What do R‐groups have to do with the shape of a protein molecule?
5. What determines the sequence of amino acids in a protein?
Nucleic Acids Page 55
6. What are the two main types of nucleic acids?
7. What are the monomers of nucleic acids?
8. Draw a nucleotide and label the phosphate group, the 5‐carbon sugar, and the nitrogenous
base.
9. How is DNA different from RNA? (4 major differences)
10. How does a DNA molecule carry information or instructions?
11. What makes nucleotides different from each other?
12. How many different nitrogenous bases are found in nucleic acids?
13. Which nitrogenous base is only found in RNA? Which is only found in DNA?
14. How many nucleotides does it take to code for one amino acid?
15. How can a DNA molecule with only four different nitrogen bases code for millions of different
proteins?