Which of the Following Is Characteristic of A $\beta$ -Pleated Sheet?
A)Hydrogen Bonds Between -NH Groups on One Part

Which of the following is characteristic of a $\beta$ -pleated sheet?

A) Hydrogen bonds between -NH groups on one part of the chain and C=O groups on nearby amino acids cause the protein to fold up on itself with the amino acids' R groups pointing outward.
B) Ion-ion interactions between side groups on different parts of the chain cause the protein to fold up on itself to forms sheets of amino acid chains.
C) London forces between hydrophobic regions in the amino acid sequence cause the protein to fold up on itself in order to have hydrophilic regions of the chain point outward.
D) Side-by-side zigzag chains of amino acids held together by hydrogen bonds aggregate to form a continuous sheet.
E) Single-strand proteins form peptide linkages between chains that cause the chains to fold on top of one another, forming a continuous sheet.