What are three functions of proteins?

1 Answer

Proteins perform a vast array of functions within organisms.


catalysing metabolic reactions, DNA replication, responding to stimuli, and transporting molecules from one location to another.
1.Building blocks
Proteins make up the hair, nails, muscles etc

  1. hormones
    Many hormones are protein in nature; hormones control growth and metabolic activities of the body.

  2. catalytic activities
    Enzymes are globular protein. Enzymes speed up the biochemical reactions and help in digestion.

  3. Transport of oxygen
    A protein called haemoglobin contain iron atom which temporarily links with oxygen and releases it throughout the body.

  4. Blood Clotting
    Fibrinogen is a glycoprotein which helps in healing of wounds. Thus it prevents the blood loss and inhibits the passage of germs

  5. Immunity
    Antibodies are proteins that bind to the pathogens and inhibit their activities.

  6. Muscles contractility
    Some proteins are responsible for muscles contractility and movement.