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Alpha helices and beta-pleated sheets form in proteins generating secondary protein structure.

Which of the following statements BEST describes the reason for secondary structure formation?

A

Hydrogen bonding between backbone molecules causes the formation of alpha helices and beta-pleated sheets.

B

Since most proteins exist in an aqueous environment in cells, hydrophobic forces cause​ the formation of alpha helices and beta-pleated sheets.

C

Many proteins must traverse phospholipid membranes in cells. The formation of alpha helices and beta-pleated sheets allows for the formation of protein structures that are amphipathic in nature; they​ can interact with both the hydrophobic and hydrophilic portions of phospholipids.

D

Interactions between amino acid R-groups results in the formation of alpha helices and beta-pleated sheets in proteins.

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