When a single polypeptide chain is coiled and held together by hydrogen bonds,this is called aan)ـــــــــــــــــــــــand occurs in the ـــــــــــــــــــــstructure of proteins.
A)beta sheet;secondary
B)alpha helix;secondary
C)beta sheet;tertiary
D)alpha helix;tertiary

Question

Quizplus · Accepted Answer

When a single polypeptide chain is coiled and held together by hydrogen bonds, this is called an alpha helix and occurs in the secondary structure of proteins. The beta sheet refers to a different type of secondary structure where the polypeptide chain is stretched out and stabilized by hydrogen bonds between neighboring strands. Tertiary structure refers to the overall 3D shape of a protein, which is determined by interactions between different regions of the polypeptide chain, such as hydrophobic interactions and disulfide bonds.

When a Single Polypeptide Chain Is Coiled and Held Together