How are proteins necessary?

Answer 1

Proteins are necessary because it has variety of functions in the cell. We consume protein rich food to meet the requirement of essential amino acids in our body. Our body synthesizes all the proteins needed for its structural and functional activities.

Answer 2

Proteins are what builds and repairs the body. For example, if you tore a muscle, proteins would repair that torn muscle.

Answer 3

because without it you wouldn't have any cells and DNA cannot be made without a special protein used to copy it

Answer 4

To do bodily functions such as blood transport, signaling, hormone secretion etc... and to build your body/tissues!