Which type of protein structure is illustrated by this image of hexokinase?
A)primary
B)secondary
C)tertiary
D)quaternary
E)helical

Question

Which type of protein structure is illustrated by this image of hexokinase? 
A)primary 
B)secondary 
C)tertiary 
D)quaternary 
E)helical

Quizplus · Accepted Answer

The image shows the folded 3D structure of hexokinase, indicating the presence of tertiary structure which refers to the overall 3D shape of a polypeptide chain due to interactions between R-groups. Primary structure refers to the linear sequence of amino acids, secondary structure refers to local folding patterns such as alpha helices and beta sheets, and quaternary structure refers to the arrangement of multiple polypeptide chains if the protein is made up of more than one subunit. "Helical" is also not a type of protein structure, but rather a type of secondary structure.

Which Type of Protein Structure Is Illustrated by This Image