Although covalent bonds are 10-100 times stronger than noncovalent interactions, many biological processes depend upon the number and type of noncovalent interactions between molecules. Which of the noncovalent interactions below will contribute most to the strong and specific binding of two molecules, such as a pair of proteins?
(a) electrostatic attractions
(b) hydrogen bonds
(c) hydrophobic interactions
(d) Van der Waals attractions
Answer: A