False.
The layering is usually thin.
The unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cellsarise from existing cells. Rudolf Virchow later made important contributions to this theory. ... Thecell is the fundamental unit of structure and function in living things.
Answer:
Protein
Explanation:
Protein is made up of amino acids that help to grow, maintain and repair different tissues in the body- including muscle.