Generally someone 120 pounds would use a 12 pound ball
Answer: (A) as enzymes to control the rate of reactions and regulate cellular activity.
Explanation: Proteins - control rate of reactions and regulate cell processes, form important <u>cellular structures and transport substances into/out of cells or fight disease.</u>
The atoms that make up the macromolecules are carbon, hydrogen, nitrogen, oxygen, phosphorus, magnesium, sulfur and iron and are distributed as follows.
Learn more in: brainly.com/question/7373020