Question

Uses of protein.

Hint:

Proteins = body’s building blocks: structure, enzymes, transport, defence, and regulation.

Answer 1

Step 1: Structural role.
Proteins provide support and strength to body structures (collagen in connective tissues, keratin in hair, nails, skin). Step 2: Catalytic role.
Proteins act as enzymes that catalyse biochemical reactions (e.g., amylase, protease). Step 3: Transport and storage.
Some proteins carry vital substances – haemoglobin transports oxygen, myoglobin stores oxygen in muscles. Step 4: Defence mechanism.
Antibodies are protein molecules that protect the body against infections. Step 5: Hormonal regulation.
Certain hormones like insulin and glucagon are proteins that regulate metabolism. Step 6: Conclusion.
Proteins are indispensable biomolecules for structural, catalytic, protective, transport, and regulatory functions.