Final answer:
The cytoskeleton does not perform cellular metabolism; it provides mechanical support, facilitates cellular movement and contraction, and suspends organelles.
Step-by-step explanation:
The function that is NOT a function of the cytoskeleton is E) cellular metabolism. The cytoskeleton provides mechanical support, facilitates cellular movement and contraction, and is responsible for the suspension of organelles. It does not have a direct role in cellular metabolism, which involves chemical reactions and processes for maintaining life, converting energy, and producing the materials needed for cell growth and repair.