Which of the following is NOT an example of hydrogen bonding?
A) The bonds formed between base pairs of nucleotides in DNA. B) The bonds formed between neighboring amino acids to form a protein's secondary structure. C) The bonds formed between amino acids to form a protein's primary structure. D) The bonds formed between molecules of H2O. E) The bonds formed between the hydroxyl groups of cholesterol molecules and the surrounding polar heads of the phospholipids in the plasma membrane.