Final answer:
Intermediate filaments are fibrous proteins that hold organelles in place and contribute to the maintenance of cell shape and structure.
Step-by-step explanation:
Intermediate filaments are fibrous proteins that hold organelles in place and contribute to the maintenance of cell shape and structure. They are intermediate in thickness between microtubules and microfilaments. Made up of long fibrous subunits of a protein called keratin, intermediate filaments resist tension and help anchor organelles within a cell.