46) Denaturation of a protein ________.
A) changes the primary structure of a protein
B) disrupts the secondary, tertiary, or quaternary structure of a protein
C) is always irreversible
D) hydrolyzes peptide bonds
E) can only occur in a protein with quaternary structure
47) One heavy metal that can cause denaturation of a protein is ________.
A) silver
B) sodium
C) barium
D) iron
E) calcium
48) Heavy metals denature proteins by ________.
A) releasing amino acids
B) disrupting hydrophobic interactions
C) changing the pH of the protein solution
D) changing the temperature of the protein solution
E) disrupting disulfide bonds
49) An acid can denature a protein by ________.
A) agitating the protein chains
B) disrupting hydrogen bonds between side chains
C) disrupting hydrophobic interactions within a protein chain
D) removing helping molecules such as heme
E) breaking disulfide bridges