Which of the following is NOT a function of proteins?

Step 1: Define the Problem

Identify which option does not describe a function of proteins.

Step 2: Break Down the Problem

List common functions of proteins to compare with the given options.

Step 3: Apply Relevant Concepts

Proteins have several key functions, including:

• Enzymatic activity (catalyzing biochemical reactions)
• Structural support (e.g., collagen in connective tissues)
• Transport (e.g., hemoglobin transporting oxygen)
• Signaling (e.g., hormones like insulin)
• Immune response (e.g., antibodies)

Step 4: Analysis, Verify and Summarize

Compare the listed functions with the options provided in the question to identify which one is not a function of proteins.

Final Answer

The option that does not align with the known functions of proteins is the correct answer. Without the specific options provided, I cannot determine which one it is. However, if an option suggests a function unrelated to the roles listed above, such as energy storage (primarily a function of carbohydrates and fats), it would be the correct choice.