Biology Cell NUMS 2024
PMDC Verified Question 30 of 143
Choose the correct set of characteristics for intermediate filaments:
A
Diameter: 8-10nm, Composition: Tubulin, Function: Muscle contraction
B
Diameter: 0.2-25μm, Composition: Vimentin, Function: Cilia, flagella
C
Diameter: 8-10nm, Composition: Vimentin, Function: Mechanical support
D
Diameter: 7nm, Composition: Tubulin, Function: Cyclosis
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Diameter: 8-10nm, Composition: Vimentin, Function: Mechanical support
Concept: The cytoskeleton consists of three distinct filament types categorized by diameter and protein composition.

Solution: Intermediate filaments have a diameter of 8-10nm (between microfilaments at 7nm and microtubules at 25nm). They are composed of various robust proteins (such as keratin or vimentin) and their primary function is to provide tensile strength and mechanical support to the cell.

Distractor Autopsy: Tubulin forms microtubules (cilia/flagella). Actin forms 7nm microfilaments (muscle contraction/cyclosis).

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