PROTEINS
What is Protein?
They are made of C,H,O,N and rarely S and P atoms .Their building units are amino acids.(amino acids are organic acids)Amino acids contain amino group( -NH2) and carboxyl group(-COOH).. Each amino acid has a side chain which is a radical group.Because of the radical group each amino acid have different characteristics.Because Of it there are 20 kind of amino acid in living systems and this causes different kinds of proteins because of different kinds of amino acid combinations.Plants can produce all the amino acids required for building all the necessary proteins but animals can't produce 8 of these amino acids.To solve that problem they get 8 of these amino acids from food.
Functions of Proteins
They are made of C,H,O,N and rarely S and P atoms .Their building units are amino acids.(amino acids are organic acids)Amino acids contain amino group( -NH2) and carboxyl group(-COOH).. Each amino acid has a side chain which is a radical group.Because of the radical group each amino acid have different characteristics.Because Of it there are 20 kind of amino acid in living systems and this causes different kinds of proteins because of different kinds of amino acid combinations.Plants can produce all the amino acids required for building all the necessary proteins but animals can't produce 8 of these amino acids.To solve that problem they get 8 of these amino acids from food.
Functions of Proteins
- Transporting molecules all around the body
- They are the tertiary energy sources for our body
- They support muscle movement and contraction
- Catalytic functions
- Some proteins fight against microbes in our body
- Enzymes are made of proteins
