Final answer:
The statement that enzymes are fibrous proteins is false. Enzymes are globular proteins that act as biological catalysts, differing from the structural role of fibrous proteins.
Step-by-step explanation:
The statement that enzymes are examples of fibrous proteins is false. Enzymes are actually a type of globular protein known for their role as biological catalysts, which means they speed up chemical reactions in the body without being consumed by those reactions. Unlike fibrous proteins that generally have structural roles, such as keratin in hair and collagen in connective tissue, enzymes are more dynamic, facilitating biochemical reactions, such as those in digestion and metabolism. For instance, digestive enzymes in your stomach like proteases break down proteins into amino acids.
Enzymes are crucial for a myriad of bodily functions, operating under highly specific conditions and with remarkable specificity to their substrates - the molecules they act upon. In the immune system, they might play a role in processes like inflammation, helping to fight off infections and diseases. Additionally, enzymes are composed of amino acids, which means they are protein-based, but their functional shape is what separates them from fibrous proteins.