Download BY 330 Spring 2015Worksheet 3 Draw a protein made up of two

BY 330 Spring 2015
Worksheet 3
1. Draw a protein made up of two amino acids. Label the peptide bonds and
indicate the N and C termini. What kind of reaction links amino acids
together?
2. Explain why the cell only makes a small number of the possible proteins,
despite the fact that many options are available.
3. List and describe the two main types of protein secondary structure. Are R
groups involved in secondary structure? (Include examples and drawings.)
4. List at least three benefits to the addition of more domains to a peptide.
5. True or False: Peptide bonds are the only covalent bonds present in higherorder protein structure.
6. True or False: All four levels of protein structure are assembled during
protein synthesis.
BY 330 Spring 2015
Worksheet 3
7. Describe how an enzyme works to lower the activation energy of a reaction.
8. Name and distinguish between the three types of active sites that can be
found on an enzyme.
9. Distinguish between negative and positive modulation and describe their
relationship to the Michaelis constant (Km).
10. Draw a graph depicting the typical relationship between enzyme activity and
substrate concentration. Label all relevant parts (x and y axis, Vmax, 1/2Vmax,
saturation point, Km, etc). What are the three ways to regulate enzyme
activity?