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A scientist observes an enzyme polypeptide chain arranged in spiral turns that rise upward and are held in place by hydrogen bonds. Which level of
structural
arrangement is s/he looking at?
A.
Tertiary
B. Quaternary
O C. Secondary



Answer :

GinnyAnswer

Final answer:

The scientist is observing the tertiary structure of the enzyme polypeptide chain, characterized by the unique three-dimensional shape of a single polypeptide chain held together by various bonds such as hydrogen bonds. Quaternary structure pertains to proteins with multiple polypeptide chains interacting to form the complete protein structure.


Explanation:

The scientist is observing the tertiary structure of the enzyme polypeptide chain, which involves the unique three-dimensional shape of a single polypeptide chain. The tertiary structure is formed by interactions between various amino acids along the polypeptide, such as hydrogen bonds, ionic bonds, disulfide bonds, and hydrophobic interactions, contributing to the intricate folding that results in the functional shape of the protein. Quaternary structure, on the other hand, involves the interaction between multiple polypeptide chains in proteins composed of more than one polypeptide chain.


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