Answer:
B. Providing the building instructions for living things
Explanation:
The function of protein macromolecules is that they provide the building instructions for living organims.
- Protein macromolecules are essential for the growth and repair of damaged tissues in the body.
- Each unit is made of covalently bonded amino acids.
- They are derived from protein based meals such as a diary products, beans, etc.
- Most of the works in the cells requires proteins.
Proteins are also polypetides.