Choose the Correct Answer from the List Below

Choose the correct answer from the list below. Not all of the answers will be used.
-Changes in ____________ create amyloid fibers which are insoluble and are the source of mad cow disease, and Alzheimer's, and Parkinson's diseases.

A) amino
B) water
C) protons
D) DNA
E) secondary structure
F) tertiary structure
G) Ramachandran
H) RNA
I) domain
J) cystine
K) proline
L) Sanger
M) D amino acids
N) cysteine