Question

which of the following is true about protein molecules?
a. protein molecules have many functions in the body, including the storage of genetic information.
b. protein molecules are made up of strands of dna joined together by amino - acid sequences.
c. the shape and folded structure of a protein molecule are important in determining its function.
d. the sequence of amino acids that make up a protein molecule do not affect its function.

Explanation:

• A: DNA stores genetic information, not proteins.
• B: Proteins are made of amino - acid sequences, not strands of DNA joined by amino - acid sequences.
• C: The shape and folded structure of a protein (its conformation) are crucial for its function, like how an enzyme's active - site shape is specific for its substrate.
• D: The amino - acid sequence determines the protein's structure and thus its function.

Answer:

C. The shape and folded structure of a protein molecule are important in determining its function.