Question

proteins are complex carbon - based polymers made from amino acids. proteins have many different functions in living organisms. determine whether each statement is true or false. all proteins have a quaternary structure. the structure of a protein impacts its function. some proteins are hormones that help regulate body processes. the types of amino acids in a polypeptide influence the structure of a protein.

Explanation:

• Quaternary structure exists only in proteins with multiple polypeptide chains. Many proteins are single - chain and lack quaternary structure. So, "All proteins have a quaternary structure" is false.
• Protein function is directly related to its structure. For example, enzymes (which are proteins) have specific active - site structures that allow them to bind to substrates. So, "The structure of a protein impacts its function" is true.
• Insulin is a protein hormone that regulates blood - glucose levels. So, "Some proteins are hormones that help regulate body processes" is true.
• The sequence and types of amino acids in a polypeptide chain determine the folding pattern (primary, secondary, tertiary, and potentially quaternary structure) of the protein. So, "The types of amino acids in a polypeptide influence the structure of a protein" is true.

Answer:

1. False
2. True
3. True
4. True