Test: GRE Subject Test: Biochemistry, Cell, and Molecular Biology

1.

Which of the following might explain why no known motor proteins have been found to utilize intermediate filaments?

Intermediate filaments are too small for motor proteins

Intermediate filaments are too large for motor proteins

Microtubules and actin are polarized, while intermediate filaments are not

Actin and microtubules are non-polar, while intermediate filaments are polar

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