Protein are the vital part of any organisms as it helps in growth and repair. The statement that best describes the molecular structure of a protein is option B, i.e., It is a complex, folded chain that helps regulate cell processes.
Protein has four main structures, namely primary, secondary, tertiary and quaternary structure. It is a complex, folded chain that helps regulate cell processes.
Each structure differ from each other in the way of folding.
The folding of protein makes the protein active to determine its main functions.
Thus, the correct option is B.
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