Which of the Following Is True About Protein Folding

Multiple Choice

Which of the following is true about protein folding?

A) Amino acids cluster in the primary sequence so that all the hydrophobic amino acids are near each other to facilitate folding into the hydrophobic core of the tertiary structure.
B) All known proteins have well-ordered conformations.
C) Amino acids with hydrophobic,nonpolar side chains stabilize the tertiary structure through hydrogen bonding with water molecules surrounding the proteins.
D) Elements from the secondary structure are maintained in the tertiary structure.