Biol 212 Worksheet:
Proteins
Supplemental Instruction
Iowa State University
Leader:
Course:
Instructor:
Date:
Greg
Biology 212 (2)
Kukday
September 2, 2015
1. REVIEW: Is a solution with [H+] = 3.6 x 10 ^ -6 an acid or a base? What is its pH? Is a
solution with [OH-] = 4.2 x 10 ^ -5 more or less acidic?
2. What is a buffer? Why are they important for organisms? Briefly discuss the
bicarbonate buffer system.
3. Draw both the non-ionized and the ionized form of a generic amino acid.
4. How many unique amino acids are there? These can be sorted into 4 groups based on the
properties of the side chain… what are these 4 groups?
5. What is the difference between monomers and polymers?
6. Explain both condensation and dehydration reactions. What is a peptide bond?
7. Distinguish between amino acids, polypeptides, oligopeptides, and proteins.
8. Describe the four types of protein structure.
9. Give several functions of proteins.
10. TEST QUESTION: Carbon has an atomic number of 6 and a mass number of 12. Which
of the following accurately represents the number of protons, neutrons and electrons?
a. 6 Protons, 12 Neutrons, 12 Electrons
b. 12 Protons, 6 Neutrons, 0 Electrons
c. 6 Protons, 0 Neutrons, 6 Electrons
d. 6 Protons, 6 Neutrons, 6 Electrons
11. TEST QUESTION: Alpha helices and beta pleated sheets are an example of which level
of protein structure?
a. Primary
b. Secondary
c. Tertiary
d.
Quaternary
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