Protein and Hydrogen Bonds

Chapter 4--The Three-Dimensional Structure of Proteins
Student: ___________________________________________________________________________
1. Exhibit 4A
The following question(s) refer to this peptide:

Cys-Ala-Gly-Arg-Gln-Met

Refer to Exhibit 4A. Total hydrolysis of the peptide in HCl would yield these products:
A. Ala, Arg, Cys, Gln, Gly, Met
B. Ala, Arg, 2 Cys, Gln, Gly, H2S
C. Ala, Arg, Cys, Glu, Gly, Met, NH3
D. Ala, Arg, 2 Cys, Glu, Gly, H2S, NH3
E. None of these answers is correct. 2. Exhibit 4A
The following question(s) refer to this peptide:

Cys-Ala-Gly-Arg-Gln-Met

Refer to Exhibit 4A. The amino terminal amino acid is:
A. Arg
B. Cys
C. Gln
D. Met
E. None of these. 3. Exhibit 4A
The following question(s) refer to this peptide:

Cys-Ala-Gly-Arg-Gln-Met

Refer to Exhibit 4A. The carboxyl terminal end is:
A. Arg
B. Cys
C. Gln
D. Met
E. None of these. 4. Exhibit 4A
The following question(s) refer to this peptide:

Cys-Ala-Gly-Arg-Gln-Met

Refer to Exhibit 4A. The overall, net ionic charge on this peptide at pH = 7 would be:
A. +2
B. +1
C. 0
D. -1
E. -2 5. The sequence of monomers in any polymer is this type of structure:
A. primary structure
B. secondary structure
C. tertiary structure
D. quaternary structure
E. All of these 6. Hydrogen bonds are most important in this type of structure in proteins:
A. primary structure
B. secondary structure
C. tertiary structure
D. quaternary structure
E. All of these 7. The overall folding of a single protein subunit is called:
A. primary structure
B. secondary structure
C. tertiary structure
D. quaternary structure
E. All of these 8. The location of prosthetic groups is shown in this level of structure:
A. primary structure
B. secondary structure
C. tertiary structure
D. quaternary structure
E. All of these 9. Structures which repeat over and over in secondary structure are called:
A. primary structure
B. domain