Proteins are a large category of organic compounds
formed from the elements
Oxygen (O) and
and, in some cases, also Sulphur (S) and Phosphorus (P).
There are many different protein molecules - all have
complex structures formed by one or more polypeptide chains of linked
Why are proteins important?
- Protein is one of the three main parts of the
human diet - the others being fat and carbohydrates.
- Proteins are essential as chemical "building-blocks"
within the body because they form the material structures of many
tissues, muscles and organs.
- Proteins are also important because of their roles
regulating bodily functions, enzymes