Q. An elaborate network of filamentous proteinaceous structures present in the cytoplasm which helps in the maintenance of cell shape is called :
A) Thylakoid
B) Endoplasmic Reticulum
C) Plasmalemma
D) Cytoskeleton
Explanation
[Solution from source] The cytoskeleton is a network of protein filaments (microtubules, microfilaments and intermediate filaments) in the cytoplasm that gives mechanical support, maintains cell shape and helps in motility. The ER is a membrane system, not a protein filament network. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.