Chem3_4Q_FA2

The amino acids in hemoglobin (or any protein) uniformly have which of the following configurations?

• L

• R

• S

• D

Which of the following properties of a protein is least likely to be affected by changes in pH?

• Tertiary Structure

• Primary Structure

• Quaternary Structure

• Secondary Strcuture

Hydrogen bonding between separate subunits of DNA polymerase is an example of which of the following?

• primary structure

• secondary structure

• tertiary structure

• quaternary structure

The unique cyclic structure of which of the following amino acids plays a central role in the formation of alpha helices and beta sheets?

• proline

• arginine

• valine

• lysine

The structure shown here represents which amino acid?

• phenylalanine

• valine

• leucine

• tyrosine

The alpha helix is an example of which of the following structural properties of proteins?

• secondary structure

• primary structure

• tertiary structure

• quaternary structure

All hydrophobic amino acids (valine, leucine, isoleucine, etc.) share which of the following properties?

• Nonpolar uncharged R groups

• Polar uncharged R groups

• Basic R groups

• Acidic R groups

What determines the unique 3D structure of a protein?

• The sequence of amino acids

• The presence of disulfide bonds

• The number of peptide bonds

• The hydrophobicity of the protein

Which level of protein structure is most directly related to the biological function of the protein?

• primary structure

• Secondary structure

• Tertiary structure

• Quaternary structure

In protein folding, what term describes the process by which a protein adopts its functional 3D structure?

• Denaturation

• Refolding

• Renaturation

• Conformational change