Question

True or false
The structure of a protein impacts its function.
The types of amino acids in a polypeptide influence the structure of a protein.
All proteins have a quaternary structure.
Some proteins are hormones that help regulate body processes.

Answer 1

1. True — a protein’s shape (its structure) determines how it works.
2. True — the chemical properties of the amino acids (size, charge, polarity, etc.) drive folding and interactions.
3. False — quaternary structure only applies to proteins made of multiple polypeptide subunits; many proteins are single chains and have no quaternary level.
4. True — some hormones are proteins (e.g., insulin, growth hormone) and regulate body processes.