What are the principal components of the cytoskeleton?
A) Microtubules, dynein, and myosin
B) Collagen fibres and reticular fibres
C) Microtubules, microfilaments, and intermediate filaments
D) Microtubules, myosin, and filamin
E) Actin, myosin and dynein
IMAT 2024 · Question 25
Q25 - Cellular structures
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The correct answer is C) Microtubules, microfilaments, and intermediate filaments.
The cytoskeleton has three kinds of filament: microtubules, microfilaments (actin) and intermediate filaments.
Myosin and dynein are motor proteins that move along those filaments, not filaments themselves. That's how A, D and E go wrong. Collagen is outside the cell, in the extracellular matrix.
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