Which Type of Cytoskeletal Element Is Described as Tough,ropelike Fibers

question 26

Multiple Choice

Which type of cytoskeletal element is described as tough,ropelike fibers composed of a variety of related proteins like keratin?

• A)microfilaments
• B)microtubules
• C)intermediate filaments
• D)macrofilaments

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Definitions:

Temporal Isolation

A mechanism of reproductive isolation that occurs when two species breed at different times of the day, season, or year, preventing mating.

Habitat Isolation

A form of prezygotic barrier where two species live in different habitats and rarely, if ever, encounter each other.

Mechanical Isolation

an evolutionary mechanism that prevents species from interbreeding due to physical differences in reproductive structures.

Hybrid Inviability

A condition where hybrid offspring fail to develop or reach sexual maturity, reducing gene flow between different species or populations.