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Which of the following functions is carried out by cytoskeleton in a cell?
Verbatim NCERT sentence under Cytoskeleton: "An elaborate network of filamentous proteinaceous structures... involved in many functions such as mechanical support, motility, maintenance of the shape of the cell!" Match Option (4) Motility!
The cytoskeleton is an elaborate eukaryotic network of proteinaceous filaments extending throughout the cytoplasm:
NCERT states verbatim: "The cytoskeleton in a cell are involved in many functions such as mechanical support, motility, maintenance of the shape of the cell."
Transportation across membranes is handled by carrier proteins and vesicles; nuclear division (karyokinesis) is a broad cell division process of which spindle assembly is just one tool; protein synthesis is carried out by ribosomes, not the cytoskeleton.
Diagnose every choice: Know exactly why the right option works and why distractors fail.
Intercellular and transmembrane transport is carried out by membrane transporters and vascular conduits.
Nuclear division involves chromatin segregation and nuclear envelope reconstitution, not the sole job of the cytoskeleton.
Protein synthesis (translation) is performed by ribosomes, mRNA, and tRNAs.
Verbatim NCERT function: cytoskeleton directly drives cellular motility (ciliary/flagellar motion and amoeboid streaming).
Students frequently fail to recognize "motility" as a cytoskeletal function because they only associate the cytoskeleton with static structural support.
"The cytoskeleton in a cell are involved in many functions such as mechanical support, motility, maintenance of the shape of the cell."
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